a (atomic weight)
41Atomic mass unit — unified atomic mass unit Unit system: SI recognized unit Unit of... mass Symbol: u Unit conversions 1 u in... is equal to...    dalton …
42Weight — This article is about the physical concept. For other uses, see Weight (disambiguation). A spring scale measures the weight of an object (according to the operational definition) …
43atomic mass — noun (chemistry) the mass of an atom of a chemical element expressed in atomic mass units • Syn: ↑atomic weight, ↑relative atomic mass • Topics: ↑chemistry, ↑chemical science • Hypernyms: ↑ …
44atomic — a. of atoms. ♦ atom bomb, ♦ atomic bomb, bomb of which the immense destructive power is due to sudden release of energy by nuclear fission. ♦ atomic number, number representing the magnitude of the positive charge on the nucleus of an… …
45atomic — adj. 1 concerned with or using atomic energy or atomic bombs. 2 of or relating to an atom or atoms. Phrases and idioms: atomic bomb = atom bomb. atomic clock a clock in which the periodic process (time scale) is regulated by the vibrations of an… …
46atomic — atomically, adv. /euh tom ik/, adj. 1. of, pertaining to, resulting from, or using atoms, atomic energy, or atomic bombs: an atomic explosion. 2. propelled or driven by atomic energy: an atomic submarine. 3. Chem. existing as free, uncombined… …
47Atomic heat — Heat Heat (h[=e]t), n. [OE. hete, h[ae]te, AS. h[=ae]tu, h[=ae]to, fr. h[=a]t hot; akin to OHG. heizi heat, Dan. hede, Sw. hetta. See {Hot}.] 1. A force in nature which is recognized in various effects, but especially in the phenomena of fusion… …
48weight — weighter, n. /wayt/, n. 1. the amount or quantity of heaviness or mass; amount a thing weighs. 2. Physics. the force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity: commonly taken, in a… …
49atomic mass — Chem. the mass of an isotope of an element measured in units formerly based on the mass of one hydrogen atom taken as a unit or on 1/16 the mass of one oxygen atom, but after 1961 based on 1/12 the mass of the carbon 12 atom. Abbr.: at. m. [1895… …
50weight unit — noun 1. a decimal unit of weight based on the gram • Syn: ↑metric weight unit • Hypernyms: ↑mass unit, ↑metric unit, ↑metric • Hyponyms: ↑microgram, ↑ …
