1. (botany, mycology) Linked or fused to a structure of a type different from itself; for example, attachment of a stamen to a petal is adnate, while attachment of a stamen to another stamen is connate.
    Adnate mushroom gills are broadly attached to the stalk slightly above the bottom of the gill, with most of the gill fused to the stem.
    An anther is adnate when fixed by its whole length to the filament.
    • 1995, Thomas H. Nash, Corinna Gries, J. A. Elix, A Revision of the Lichen Genus Xanthoparmelia in South America, page 61 ↗,
      Morphologically and chemically X. isidiigera is also similar to X. australasica, but the isidia are typically thinner and more coralloid branched and the thallus more adnate in the latter species.
    • 2009, Flora Neotropica, Issue 104, page 88 ↗,
      Morphologically, Hypotrachyna kriegeri closely resembles more adnate morphotypes of H. imbricatula.
  2. (zoology) Growing with one side adherent to a stem; applied to the lateral zooids of corals and other compound animals. in fish, having the eyes fused and unable to rotate independently
    • 1988, Henry W. Robison, Thomas M Buchanan, Fishes of Arkansas, page 312 ↗,
      It differs from N. eleutherus by possessing a more adnate adipose fin and more prominent saddles and from N. albater by having 8 soft pectoral rays, a submarginal adipose bar, and no prominent basicaudal bar (Douglas 1972).
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