BILLIONTH

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does billionth mean? 

• BILLIONTH (noun)
  The noun BILLIONTH has 2 senses:

1. position 1,000,000,000 in a countable series of things

2. one part in a billion equal parts

  Familiarity information: BILLIONTH used as a noun is rare.

• BILLIONTH (adjective)
  The adjective BILLIONTH has 1 sense:

1. the ordinal number of one billion in counting order

  Familiarity information: BILLIONTH used as an adjective is very rare.

 Dictionary entry details 

• BILLIONTH (noun)

Sense 1

Meaning:

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

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)

Sense 2

Meaning:

One part in a billion equal parts

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

billionth; one-billionth

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

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

• BILLIONTH (adjective)

Sense 1

Meaning:

The ordinal number of one billion in counting order

Similar:

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

 Context examples 

A unit of concentration (molarity unit) equal to one billionth of a mole (10E-9 mole) of solute in one liter of solution.

(Nanomole per Liter, NCI Thesaurus)

The amount of a substance equal to a billionth of a mole (a measure of the amount of a substance).

(Nanomole, NCI Dictionary)

A unit of concentration (molarity unit) equal to one billionth of a mole (10E-9 mole) of solute per minute per milliliter.

(Nanomole per Minute per Milliliter, NCI Thesaurus)

A unit of concentration (molarity unit) equal to one billionth of a mole (10E-9 mole) of solute in one milliliter of solution to be administered per minute of time.

(Nanomole per Minute per Milliliter, NCI Thesaurus/CDISC)

A unit of time equal to one billionth of a second.

(Nanosecond, NCI Thesaurus)

A unit of spatial measurement that equals one-billionth (10 [SUP]-9[/SUP]) of a meter.

(Nanometer, The Titi Tudorancea Bulletin)

A unit of volume equal to one billionth of a liter (10E-9 liter).

(Nanoliter, NCI Thesaurus)

A unit prefix indicating a quantity of 10E-9 or one one-billionth.

(Nano, NCI Thesaurus)

The metric unit of mass equal to one billionth of a gram (10E-9 gram) or one thousandth of a milligram.

(Nanogram, NCI Thesaurus)

A unit of catalytic activity measurement equal to one billionth of katal (10E-9 katal).

(Nanokatal, NCI Thesaurus)