Definition of filiform in English:

filiform

adjective

Biology
  • Thread-like.

    ‘the antennae are filiform’
    • ‘This common condition of unknown aetiology, which affects about 10% of children and adults, is characterised by map-like red areas of atrophy of filiform tongue papillae in patterns that change even within hours.’
    • ‘Many zygotes were adjacent to a persistent synergid with filiform apparatus.’
    • ‘The filiform papillae are long and stained by accumulated debris.’
    • ‘Plants on this latter medium were very short with filiform leaves.’

Origin

Mid 18th century: from Latin filum thread + -iform.

Pronunciation:

filiform

/ˈfʌɪlɪfɔːm/