Definition of monosemy in US English:

monosemy

noun

Linguistics
  • The property of having only one meaning.

    • ‘These concern the distinction between polysemy and homonymy, and between polysemy and monosemy.’

Origin

1950s: from mono- ‘one’ + Greek sēma ‘sign’ + -y.

Pronunciation

monosemy

/ˈmänəˌsēmē/