Definition of pennate in English:

pennate

Syllabification: pen·nate
Pronunciation: /ˈpenāt
 
/

adjective

Botany
  • (Of a diatom) bilaterally symmetrical. Compare with centric.
    More example sentences
    • The major source of the spring diatom pulse was Skeletonema potamos and a variety of centric and pennate diatoms.
    • Diatoms are photosynthetic protists, which are classified into centric and pennate diatoms, according to whether they have a radial or bilateral symmetry.
    • Both articulated and broken pennate diatoms, up to 12 m long and 4 m wide, are scattered throughout the stromatolitic sinters.

Origin

mid 19th century: from Latin pennatus 'feathered, winged', from penna 'feather'.

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