trillionth

1. 1.

   one part in a trillion equal parts

   Synonymsone-trillionth

   Broadercommon fraction

1. 1.

   the ordinal number of one trillion in counting order

   Similarordinal

Other forms of trillionth

plural

trillionths·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about trillionth

What does trillionth mean?

trillionth means "one part in a trillion equal parts". That is the primary sense; the word has 2 in total, listed in full on this page.

How many syllables are in trillionth?

trillionth has 3 syllables: tril-li-onth. The stress falls on "tril".

What is another word for trillionth?

Close synonyms include one-trillionth. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is trillionth a common word?

trillionth is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.