molecular weight

mo·lec·u·lar weight

M m

Definitions of molecular weight words

noun molecular weight the average weight of a molecule of an element or compound measured in units once based on the weight of one hydrogen atom taken as the standard or on 1/16 (0.0625) the weight of an oxygen atom, but after 1961 based on 1/12 (0.083) the weight of the carbon-12 atom; the sum of the atomic weights of all the atoms in a molecule. Abbreviation: mol. wt. 1
noun molecular weight the relative average weight of a molecule of a substance, expressed by a number equal to the sum of the atomic weights of all atoms in the molecule 0

before 1875

One of the 25% newest English words

First recorded in 1875-80

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

This term is known only to a narrow circle of people with rare knowledge. Only 2% of English native speakers know the meaning of this word.

According to our data most of word are more popular. This word is almost not used. It has a much more popular synonym.

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