Added 9 October 2026
reciprocal
/ɹɪˈsɪpɹək(ə)l/ adjective
In Latin: mūtuus, reciprocus Wiktionary
adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about reciprocal at Wordnik → Where our words come from →
noun
-
The number obtained by dividing 1 by another given number; the result of exchanging the numerator and the denominator of a fraction.
0.5 is the reciprocal of 2.
- A construction expressing mutual action.
Origin
From Latin reciprocus, possibly from a phrase such as reque proque (“back and forth, to and fro”), from re- (“back”), prō (“forwards”) and -que (“and”).
From Wiktionary, via Kaikki.org (CC BY-SA)