Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No pronunciation record was provided for this word.
noun
the number of offspring equivalents an individual rears, rescues or otherwise supports through its behavior (regardless of who begets them).
Definition source: English Wiktionary via Wiktextract
Qualifier: evolutionary theory
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Coined by W. D. Hamilton in his 1964 paper "The Genetical Evolution of Social Behaviour".
