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pinna

pinna

9.9
A small leaf part of a larger divided leaf, like on a fern
  • noun
  • /ˈpɪnə/
  • Specialized
translation icon : pinna
  • The plant's leaves are composed of several small pinna, each contributing to its overall beauty.

Examples

  • The biologist described the unique structure of each pinna found on the fern, highlighting their intricate patterns.

  • The input to the microphone is the free-field sound pressure generated by an ideal loudspeaker because no pinna or head effects are present.

    Academic text (1990)
  • The pinna effects, which convert the free-field excitation into the pressure at the microphone, have not been included because they are equivalent to a modification of the excitation signal and can be added at a later date if needed.

    Academic text (1990)
  • It would be more useful, if not practical, to employ an omnidirectional microphone near the canal entrance and offer the wearer the benefits of pinna filtering.

    Academic text (1990)
  • A fern's pinna can often be mistaken for a leaf due to its distinct shape and arrangement.

Surface Forms

pinna singular
pinnas plural

Etymology

The word pinna comes from the Latin pinna, which meant 'feather' or 'wing', so in plants a pinna is a small 'feather-like' part of a leaf. This helps you imagine a fern with many little leaflets like the feathers on a bird.