[ am-uh n-tey-shuh s ]
/ ˌæm ənˈteɪ ʃəs /

adjective Botany.

consisting of an ament.
bearing aments.

Origin of amentaceous

First recorded in 1730–40; ament1 + -aceous Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for amentaceous

  • Instances of this kind may be met with in willows, hazels, alders, and other amentaceous plants.

    Vegetable Teratology|Maxwell T. Masters