An astronomical instrument, based on a telescope, for measuring the diameter of the sun; now used to measure the angular distance between stars and other celestial bodies.
heliometry
heliometry
noun
The measurement of the diameters of heavenly bodies, their relative distances, etc.
hemitropal
hemitropal
adj
Of a crystal: having one part in reverse position with reference to the other part; twinned.
isothermal
isothermal
adj
Of or pertaining to a process that takes place at constant temperature
Of or pertaining to an isotherm
noun
(geography) An isotherm
limitrophe
limitrophe
adj
Border, frontier; being or existing along a border or frontier.
noun
A border state or area.
lithomarge
lithomarge
noun
kaolinite
lithometer
lithosperm
motherlike
motherlike
adj
Having the quality or suggestive of a mother; maternal, motherly.
motherling
motherling
noun
(derogatory) Mother.
(diminutive, endearing) A mother, especially a precious one.
A woman's child.
thermophil
thermopile
thermopile
noun
(electronics) An electronic device that converts thermal energy into electrical energy. Usually constructed using a series-combination of thermocouples
