(medicine) A birth defect in which the head is absent
acervatim
acetalize
acetalize
verb
(organic chemistry) To convert (an aldehyde) into an acetal.
acetamide
acetamide
noun
(organic chemistry) The amide of acetic acid, CH₃CONH₂.
acetamido
acetamido
noun
(organic chemistry) The univalent radical derived from acetamide
acetamids
acetamids
noun
plural of acetamid
acetanion
acetannin
acetannin
noun
(organic chemistry) An acetyl derivative of tannic acid
acetation
acetation
noun
(obsolete, organic chemistry) Synonym of acetification
acetified
acetified
verb
simple past tense and past participle of acetify
acetifier
acetifier
noun
An apparatus for hastening acetification
acetifies
acetifies
verb
Third-person singular simple present indicative form of acetify
acetonize
acetonize
verb
(rare) Synonym of acetonate
acetosity
acetosity
noun
The quality of being acetous; sourness.
acetoxime
acetoxime
noun
(organic chemistry) The ketoxime of acetone
acetylide
acetylide
noun
(organic chemistry) Any organic compound derived from acetylene or a terminal acetylene by replacing a hydrogen atom with a metal.
acetylize
acetylize
verb
Synonym of acetylate
achalasia
achalasia
noun
(medicine, pathology) A neuromuscular condition where a ring of muscles is unable to relax fully; usually with reference to gastrointestinal smooth muscles or to esophageal achalasia when not otherwise specified.
acheilary
acheilous
acheilous
adj
(obsolete, pathology) lipless
acheirous
acheirous
adj
Of or pertaining to acheiria (lacking one or both hands)
achenodia
achetidae
acheulian
achievers
achievers
noun
plural of achiever
achieving
achieving
noun
Achievements, emphasizing the process of accomplishing them.
verb
present participle of achieve
achillean
achillean
Adjective
Resembling or relating to Achilles, the hero of the Iliad.
Invincible with only one small weakness (an Achilles heel), which becomes one's downfall.
Guided by emotional motives, especially rage, rather than reason.
Of or relating to a Roman-era Greek writer.
Pertaining to the Achilles tendon.
Of or relating to male homosexuals or male homosexuality, in the style of Achilles' relationship with Patroclus.
achilleas
achilleas
noun
plural of achillea
achilleid
achillein
achillize
achimenes
achimenes
noun
A Central American plant, of the genus Achimenes, having showy, trumpet-shaped flowers
acholuria
acholuria
noun
(pathology) A lack of bile pigments in the urine
acholuric
acholuric
adj
(pathology) Of or pertaining to acholuria
achronism
achropsia
aciculate
aciculate
adj
Furnished with aciculae.
Marked with fine irregular streaks as if scratched by a needle.
acicular (needle-shaped)
aciculums
aciculums
noun
plural of aciculum
acidaemia
acidaemia
noun
(medicine) a medical condition marked by an abnormally high concentration of hydrogen ions in a person's blood
acidalium
acidaspis
acidemias
acidemias
noun
plural of acidemia
acidheads
acidheads
noun
plural of acidhead
acidified
acidified
verb
simple past tense and past participle of acidify
acidifier
acidifier
noun
(chemistry) A simple or compound principle, whose presence is necessary to produce acidity, as oxygen, chlorine, bromine, iodine, etc.
acidifies
acidifies
verb
Third-person singular simple present indicative form of acidify
acidities
acidities
noun
plural of acidity
acidizing
acidizing
verb
present participle of acidize
acidology
acidophil
acidophil
noun
(immunology) An eosinophil; a white blood cell responsible for combating infection by parasites in the body.
One of the endocrine acidophilic cells of the adenohypophysis, including somatotrophs and lactotrophs.
acidproof
acidproof
adj
Resistant to the corrosive effects of acid.
acidulant
acidulant
noun
A food additive used to increase acidity or to give a tart taste
acidulate
acidulate
verb
(transitive) To make slightly or moderately acid; to acidify.
(transitive) To make sour in a moderate degree; to sour somewhat.
(transitive) To use an acidic catalyst, with the chemical change being emphasised over the importance of the change in pH. Used in the processing of biodiesel co-products.
acidulent
acidulent
adj
Having an acid quality; sour; acidulous.
acidulous
acidulous
adj
(figurative) Sharp; caustic.
Containing carbonic acid.
Slightly sour; sub-acid; sourish.
acidurias
acidurias
noun
plural of aciduria
acierated
acierated
verb
simple past tense and past participle of acierate
acierates
acierates
verb
Third-person singular simple present indicative form of acierate
aciliated
aciliated
adj
Alternative form of aciliate
acinacity
acinetina
aciniform
aciniform
adj
Full of small kernels like a grape.
Having the form of a cluster of grapes; clustered like grapes.
noun
A type of spinneret of a spider formed of spherical particles
acipenser
acknowing
acknowing
verb
present participle of acknow
acleidian
acleidian
adj
Alternative form of aclidian
acmaeidae
acneiform
acneiform
adj
(pathology) Alternative form of acneform
acockbill
acockbill
adv
(nautical) Hanging at the cathead, ready to let go, as an anchor.
(nautical) Topped up; having one yardarm higher than the other.
acoemetic
acoemetic
adj
Relating to, or characteristic of the Acoemetae
acoluthic
acoluthic
adj
Pertaining to a residual sense impression immediately following a stimulus, as with an afterimage
aconative
aconative
adj
Lacking conation
aconitine
aconitine
noun
(organic chemistry) An intensely poisonous alkaloid, extracted from aconite
aconitums
aconitums
noun
plural of aconitum
acopyrine
acoustics
acoustics
noun
(physics) The science of sounds, teaching their nature, phenomena and laws.
plural of acoustic
acquaints
acquaints
verb
Third-person singular simple present indicative form of acquaint
acquaviva
acquiesce
acquiesce
verb
(intransitive) To concur upon conviction; to assent to; usually, to concur, not heartily but so far as to forbear opposition.
(intransitive, with in (or sometimes with, to)) To rest satisfied, or apparently satisfied, or to rest without opposition and discontent (usually implying previous opposition or discontent); to accept or consent by silence or by omitting to object.
acquirers
acquirers
noun
plural of acquirer
acquiring
acquiring
verb
present participle and gerund of acquire
acquisita
acquisite
acquisite
adj
(obsolete) acquired
acquittal
acquittal
noun
(historical) The act of releasing someone from debt or other obligation; acquittance.
(law) A legal decision that someone is not guilty with which they have been charged, or the formal dismissal of a charge by some other legal process.
(now rare) The act of fulfilling the duties (of a given role, obligation etc.).
(rare) Avoidance of danger; deliverance.
Payment of a debt or other obligation; reparations, amends.
acquitted
acquitted
adj
Having been acquitted; having gone through a trial that resulted in something other than a guilty verdict.
verb
simple past tense and past participle of acquit
acquitter
acquitter
noun
One who acquits or releases.
acraeinae
acraniate
acraniate
adj
That lacks a cranium
noun
Any animal of the class Acrania
acrasieae
acrididae
acridines
acridines
noun
plural of acridine
acridinic
acridness
acridness
noun
bitterness or acerbity
acritical
acritical
adj
Not critical
Not involving a crisis
acrobatic
acrobatic
adj
Of or pertaining to an acrobat.
vigorously active
acrocarpi
acrocomia
acrodynia
acrodynia
noun
(pathology) An epidemic disease of the skin characterized by increased sensibility of the soles and palms, with pricking sensations in them and rheumatoid pains in the hands and feet.
acrogenic
acrogenic
adj
Alternative form of acrogenous
acroleins
acroleins
noun
plural of acrolein
acroliths
acroliths
noun
plural of acrolith
acrologic
acrologic
adj
Of or pertaining to acronyms
Of or pertaining to the naming of hieroglyphic symbols by the first phonetic sound of the picture they represent
acromania
acromania
noun
(obsolete) mental illness (especially when accompanied by hyperactivity)
acromimia
acromyodi
acronical
acronical
adj
(astronomy) Alternative form of acronycal
Occurring at sunset.
Occurring at the end of life.
acronymic
acronymic
Adjective
Pertaining to the use of acronyms.
acropodia
acropodia
noun
plural of acropodium
acropolis
acropolis
noun
A promontory (usually fortified with a citadel) forming the hub of many Grecian cities, and around which many were built for defensive purposes before and during the classical period; compare Acropolis.
acrospire
acrospire
noun
(botany) The sprout at the end of a seed when it begins to germinate.
verb
To put forth the first sprout.
acrostics
acrostics
noun
plural of acrostic
acroteria
acroteria
noun
plural of acroterium
acroteric
acroteric
adj
Relating to the extremities of the limbs or to the tip of the nose
acrotisms
actinally
actinally
adv
In an actinal manner.
actinians
actinians
noun
plural of actinian
actinical
actinides
actinides
noun
plural of actinide
actinidia
actinisms
actinisms
noun
plural of actinism
actiniums
actiniums
noun
plural of actinium
actinoida
actinoids
actinoids
noun
plural of actinoid
actinopod
actinopod
noun
(zoology) Any member of the variously ranked group Actinopoda of protozoa.
actinozoa
actinozoa
noun
plural of actinozoon
actinulae
actinulae
noun
plural of actinula
actionary
actionary
noun
(business, obsolete) A shareholder in a joint-stock company.
actionist
actionist
noun
(art, sometimes capitalized) One taking part in the actionism movement.
Synonym of activist
actionize
actionize
verb
(transitive, rare) To bring a legal action against; to sue.
actipylea
activable
activable
adj
Capable of being activated
activated
activated
verb
simple past tense and past participle of activate
activates
activates
verb
Third-person singular simple present indicative form of activate
activator
activator
noun
(biology) A type of effector that increases the rate of enzyme-mediated reactions.
(biology) Any chemical or agent which regulates one or more genes by increasing the rate of transcription.
(chemistry) Something that activates a catalyst
(mining) An agent that enables the flotation of a mineral or minerals.
A type of dopant used in phosphors and scintillators.
One who, or that which, activates.
activisms
activisms
noun
plural of activism
activists
activists
noun
plural of activist
activital
activital
adj
Relating to activity, especially (anthropology) the complex activities of human beings within a culture.
activized
activized
verb
simple past tense and past participle of activize
actoridae
actorship
actorship
noun
The state or quality associated with being an actor.
actualise
actualise
verb
Non-Oxford British English standard spelling of actualize.
actualism
actualism
noun
(philosophy) The belief that actuality and existence are co‐extensive: i.e., that only actual things exist, and merely possible things do not.
actualist
actualist
noun
A proponent of actualism.
actuality
actuality
noun
(historical, film) A short early motion picture.
(television) Live reporting on current affairs.
An instance or quality of being actual or factual; fact.
The state of existing; existence.
actualize
actualize
verb
(intransitive) To become actual or real.
(reflexive) To realize one's full potential.
(transitive) To make real; to realize.
actuarial
actuarial
adj
Of or pertaining to actuaries.
Relating to statistical calculation, especially pertaining to insurance.
actuarian
actuarian
adj
Synonym of actuarial
noun
Synonym of actuary
actuaries
actuaries
noun
plural of actuary
actuating
actuating
verb
present participle of actuate
actuation
actuation
noun
The act of putting into motion.
acuminate
acuminate
adj
(botany, mycology) Tapering to a long point in concave manner at its apex.
Tapering to a point; pointed.
verb
(intransitive) To end in or come to a sharp point.