- Botany. attached by the base, or without any distinct projecting support, as a leaf issuing directly from the stem.
- Zoology. permanently attached; not freely moving.
Origin of sessile
Examples from the Web for sessile
Historical Examples of sessile
This plant is sessile or nearly so, growing on the ground in dense clusters.
The peridium is globe-shaped, sessile, without a stem-like base.
The plant is sessile and quite strongly rooted with fine rootlets.
When either the flowers or the clusters are without stems, they are said to be sessile.
Leaves or leaflets are sessile when they have no stems, and petiolate when they have stems.
- (of flowers or leaves) having no stalk; growing directly from the stem
- (of animals such as the barnacle) permanently attached to a substratum
Word Origin for sessile
Word Origin and History for sessile
1725, "adhering close to the surface," from Latin sessilis "pertaining to sitting, for sitting on," from sessum, past participle of sedere "to sit" (see sedentary). In botany from 1753. Meaning "sedentary" first recorded 1860.
- Permanently attached or fixed; not free-moving.
- Permanently attached or fixed and not free-moving, as corals and mussels.
- Stalkless and attached directly at the base, as certain kinds of leaves and fruit.