(biochemistry) A neurotransmitter in humans and other animals. It is an ester of acetic acid and choline with chemical formula CH₃COOCH₂CH₂N⁺(CH₃)₃.
acetylcholinesterase
acetylcholinesterase
noun
(biochemistry) An enzyme that catalyzes the hydrolysis of the neurotransmitter acetylcholine into choline and acetic acid.
acetylcholinic
acetylcholinic
adj
(biochemistry) Of or relating to acetylcholine.
acetylhydrazine
acetylhydrazine
noun
(organic chemistry) The acylhydrazine of acetic acid CH₃CO-NH-NH₂
acetylmethylcarbinol
acetylmethylcarbinol
noun
(organic chemistry) acetoin
acetylphenylhydrazine
achaemenian
achaemenid
achaemenidae
achaemenides
achaemenidian
achaemenids
achaia
achaian
achakzai
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.
achariaceae
achariaceous
acharnians
achatina
achatinella
achatinella
noun
Oahu tree snail (Achatinella spp.).
achatinidae
acheilary
acheilia
acheilia
noun
(pathology) A congenital absence of lips, liplessness
acheilous
acheilous
adj
(obsolete, pathology) lipless
acheiria
acheiria
noun
A loss of sense in one or both hands, or the inability to tell on which side of the body a stimulus has been applied
The congenital absence of one or both hands
acheirous
acheirous
adj
Of or pertaining to acheiria (lacking one or both hands)
acheirus
achenia
achenia
noun
plural of achenium
achenial
achenial
adj
Pertaining to an achene.
achenium
achenium
noun
(botany) achene
achenodia
achenodium
acheronian
acheronian
Adjective
Of or pertaining to Acheron.
acherontic
acherontic
adj
Alternative form of Acherontic
acherontical
achetidae
acheulian
achier
achier
adj
comparative form of achy: more achy
achiest
achiest
adj
superlative form of achy: most achy
achievability
achievability
noun
The state or condition of being achievable.
achievable
achievable
adj
Capable of being achieved, which either means possible or probable.
Not linked to fate or outside influences.
achieve
achieve
verb
(intransitive) To succeed in something, now especially in academic performance.
(obsolete, intransitive) To conclude, to turn out.
(obsolete, transitive) To conclude, finish, especially successfully.
(transitive) To carry out successfully; to accomplish.
(transitive) To obtain, or gain (a desired result, objective etc.), as the result of exertion; to succeed in gaining; to win.
(transitive, now literary) To obtain (a material thing).
Show all the spoils by valiant kings achieved.
achieved
achieved
adj
(of a goal or status) Having been reached, attained or accomplished.
verb
simple past tense and past participle of achieve
achievement
achievement
noun
(grammar, semantics) The lexical aspect (aktionsart) of verbs or predicates that change in an instant.
(heraldry) An escutcheon or ensign armorial; a full display or depiction of all the heraldic components to which the bearer of a coat of arms is entitled; (now especially) a funeral shield: the hatchment.
(sociology) The successful completion of a socially defined goal or task, highlighting individual or group accomplishment.
(video games) An award for completing a particular task or meeting an objective in a video game.
A great or heroic deed or feat; something accomplished by valor or boldness.
The act of achieving or performing; a successful performance; accomplishment.
achievements
achievements
noun
plural of achievement
achiever
achiever
noun
One who achieves something.
One who tends to succeed; a winner.
achievers
achievers
noun
plural of achiever
achieves
achieves
verb
Third-person singular simple present indicative form of achieve
achieving
achieving
noun
Achievements, emphasizing the process of accomplishing them.
verb
present participle of achieve
achigan
achilary
achill
achill
adj
chilled; chilly
achille
achillea
achillea
noun
Any of various plants of the genus Achillea
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
achilleine
achilleine
noun
(organic chemistry) An alkaloid (C₂₀H₃₈N₂O₁₅) found in plants of the genus Achillea.
achilles
achilles
Proper noun
semi-divine hero, son of Peleus and the nymph Thetis, prince and leader of the Myrmidons; great warrior of the Achaean (Greek) camp, killed in the Trojan War; central character of the Iliad.
achillize
achillobursitis
achillobursitis
noun
(pathology) inflammation of a bursa near the Achilles tendon
achillodynia
achillodynia
noun
(pathology) pain due to achillobursitis
achilous
achilous
adj
(botany, anatomy) without a lip.
achimaas
achime
achime
adj
chiming
achimelech
achimenes
achimenes
noun
A Central American plant, of the genus Achimenes, having showy, trumpet-shaped flowers
achinese
achiness
achiness
noun
The property of being achy.
achinesses
aching
aching
adj
That aches; continuously painful; that causes pain.
noun
The feeling of an ache; a dull pain.
verb
present participle of ache
achingly
achingly
adv
In an aching manner; sorely.
achiote
achiote
noun
A tropical American evergreen shrub, Bixa orellana; the lipstick tree.
An orange-red dye obtained from this seed.
The seed of this tree used as a colouring or in Latin American cooking.
achiotes
achiotes
noun
plural of achiote
achira
achira
noun
Canna indica (syn. Canna edulis), similar to arrowroot: the canna lily, the seeds of which yield a purple dye.
The edible rhizome of this plant.
achirite
achirite
noun
dioptase
achish
achitophel
achlorhydria
achlorhydria
noun
(medicine) The absence of hydrochloric acid in the stomach
achlorhydric
achlorhydric
adj
(pathology) Of or pertaining to achlorhydria
achloropsia
achloropsia
noun
Inability to distinguish the colour green.
achluophobia
achluophobia
noun
The fear of darkness.
acholia
acholia
noun
(medicine, pathology) Deficiency or absence of bile.
acholias
acholic
acholic
adj
(medicine) Lacking bile (or bile pigments) (for example, making feces light-colored).
acholuria
acholuria
noun
(pathology) A lack of bile pigments in the urine
acholuric
acholuric
adj
(pathology) Of or pertaining to acholuria
achomawi
achomawi
Proper noun
The native language spoken by the Pit River people of present-day California.
achondrite
achondrite
noun
(astronomy, geology) Any stony meteorite that contains no chondrules
achondrites
achondrites
noun
plural of achondrite
achondritic
achondritic
adj
(geology) Of or pertaining to achondrites, a type of stony meteorite.
achondroplasia
achondroplasia
noun
(teratology) A genetic disorder, the most common form of short limb dwarfism.
achondroplastic
achondroplastic
adj
(teratology) Of, related to, or suffering from achondroplasia.
achorion
achrodextrin
achrodextrin
noun
(biochemistry, cytology) A form of dextrin that is not colourable by iodine
achrodextrinase
achroglobin
achroiocythaemia
achroiocythemia
achroite
achroite
noun
(mineralogy) A colourless form of tourmaline
achromasia
achromasia
noun
Absence of normal skin pigmentation (from bruising, stress or disease); pallor or achromia.
The inability of a cell or tissue to be stained.
achromatiaceae
achromatic
achromatic
adj
(biology) Uncolored; not absorbing color from a fluid; -- said of tissue
(music) Having only the diatonic notes of the scale; not modified by accidentals.
(optics) Free from color; transmitting light without color-related distortion.
Being achromatic in subject
Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
achromatically
achromatically
adv
In an achromatic manner.
achromaticity
achromaticity
noun
(optics) The state or quality of being achromatic.
achromatin
achromatin
noun
(biology) Tissue that is not stained by fluid dyes.
achromatinic
achromatinic
adj
(cytology, of a cell nucleus) Lacking the ability to be coloured by a stain.
achromatisation
achromatise
achromatise
verb
Non-Oxford British English standard spelling of achromatize.
achromatised
achromatised
verb
simple past tense and past participle of achromatise
achromatising
achromatising
verb
present participle of achromatise
achromatism
achromatism
noun
(optics) The state or quality of being achromatic; achromaticity.
Achromatopia.
The state of being free of colors, not emitting or separating into colors.
achromatisms
achromatisms
noun
plural of achromatism
achromatium
achromatizable
achromatization
achromatization
noun
The act or process of achromatizing.
achromatize
achromatize
verb
(transitive) To deprive of colour; to make achromatic.
(transitive) To remove chromatic aberration from an optical system
achromatized
achromatized
verb
simple past tense and past participle of achromatize
achromatizes
achromatizes
verb
Third-person singular simple present indicative form of achromatize
achromatizing
achromatizing
verb
present participle of achromatize
achromatolysis
achromatolysis
noun
(cytology) dissolution of achromatin
achromatophil
achromatophil
noun
(cytology) A cell (or tissue) that is not readily coloured by stains
achromatophile
achromatophile
adj
Being or relating to an achromatophil.
achromatophilia
achromatophilia
noun
(cytology) The condition of being an achromatophil
achromatophilic
achromatopia
achromatopia
noun
defective ability to see colours
achromatopsia
achromatopsia
noun
achromatopia
achromatosis
achromatosis
noun
(pathology) achromia, albinism
achromaturia
achromaturia
noun
(pathology) The lack of pigments (especially bile pigments) in the urine
achromia
achromia
noun
(medicine) Absence of pigmentation, especially in the skin or blood
achromic
achromic
adj
(sciences) Uncoloured; not pigmented; lacking in colour.
achromobacterieae
achromophilous
achromophilous
adj
Not chromophilous.
achromotrichia
achromotrichia
noun
The absence (or loss) of pigmentation in the hair.
achromycin
achronical
achronical
adj
(astronomy) Alternative form of achronic
achronism
achroodextrin
achroodextrin
noun
Alternative form of achrodextrin
achroodextrinase
achropsia
achylia
achylia
noun
(pathology) The lack or reduced production of gastric juices in any part of the digestive tract.
achymia
acichlorid
acichloride
acidanthera
acidanthera
noun
Any of the gladioli previously placed in the genus Acidanthera.
acidhead
acidhead
noun
(slang, derogatory) A person who uses the hallucinogenic drug LSD.
acidheads
acidheads
noun
plural of acidhead
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.
acidophile
acidophile
noun
A plant that thrives in relatively acid soil.
An organism that lives and thrives under acidic conditions; a form of extremophile.
acidophiles
acidophiles
noun
plural of acidophile
acidophilic
acidophilic
adj
Easily stained with acidic dyes, such as eosin.
Thriving under acidic conditions; relating to or being an acidophile.