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Glite Dictionary
one-trillionth

one-trillionth

8.9
One part out of a trillion equal parts
  • noun
translation icon : billónésima
  • A one-trillionth of a meter is called a picometer in scientific measurement.

Examples

  • Even a one-trillionth change in DNA sequence can have significant effects.

  • The contamination level was less than one-trillionth of the acceptable limit.

  • The concentration was measured at one-trillionth of a gram.

  • A one-trillionth of a second is incredibly brief.

  • The smallest unit of measurement in the experiment was one trillionth of a millimeter.

  • Scientists have discovered particles that are smaller than one trillionth of a meter.

  • To put it in perspective, a drop of water contains about one trillionth of its total volume as impurities.

Synonyms

trillionth
vsone-trillionth
1 6.7

One part when something is divided into a trillion equal parts

is identical in meaning but uses a hyphenated longer written form

How Small

one-trillionth
8.9
one-tenth
18 1.0
one-half
61 1.0

Surface Forms

one-trillionth singular
one-trillionths plural

Morphology

one-trillionth = one + trillionth (transparent) = one + trillion + th

The word is a straightforward combination of the numeral 'one' and the ordinal/fraction 'trillionth', so learners who know the components can derive the meaning.

Etymology

One-trillionth combines one, trillion, and the ending -th. The trillion part comes from tri- meaning 'three' (as in triangle) and -th marks a 'part' (as in one-tenth), so a one-trillionth is one tiny part of a trillion equal parts.