nervule

nounB1

Định nghĩa theo từ loại

Danh từ

noun

Plural noun:

nervules

1.
(botany) A minor, nonsupporting vein in a leaf of a plant; a branch vein of a nervure (supporting vein) or of another nervule.
2.
(entomology) A minor vein in a wing of an insect.
2003, W. J. Holland, Cassia B. Farkas (editor), Field Guide to Butterflies, Revised and Updated Edition, page 12, The branches of these compound veins are known as nervules. The median vein always has three nervules. The nervules of the subcostal veins branch up and outward, with from four to five subcostal nervules, toward the costal margin and the apex of the forewing.

Từ liên quan

Cùng gốc / liên quan

nerve nervure neuration

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Nguồn gốc từ

From either nervure + -ule or nerve + -ule.