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BILLIONTH

Pronunciation (US): Play  (GB): Play

 I. (noun) 

Sense 1

Meaning:

One part in a billion equal partsplay

Synonyms:

billionth; one-billionth

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("billionth" is a kind of...):

common fraction; simple fraction (the quotient of two integers)

Sense 2

Meaning:

Position 1,000,000,000 in a countable series of thingsplay

Classified under:

Nouns denoting relations between people or things or ideas

Hypernyms ("billionth" is a kind of...):

rank (relative status)

Domain region:

America; the States; U.S.; U.S.A.; United States; United States of America; US; USA (North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776)

 II. (adjective) 

Sense 1

Meaning:

The ordinal number of one billion in counting orderplay

Classified under:

Adjectives

Similar:

ordinal (being or denoting a numerical order in a series)

Credits

 Context examples: 

One ppbv means that if you take a volume of air on Mars, one billionth of the volume of air is methane.

(Curiosity Detects Unusually High Methane Levels, NASA)

A unit of catalytic activity concentration defined as the catalytic activity of the component equal to one billionth of katal (10E-9 katal) in the unit volume of the system equal to one liter.

(Nanokatal per Liter, NCI Thesaurus)

A unit of radioactivity equal to one billionth of a curie or 37 becquerels, and corresponding to radioactivity of 37 atomic disintegrations per second.

(Nanocurie, NCI Thesaurus)




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