Definition of sessile
1 : attached directly by the base : not raised upon a stalk or peduncle <a sessile leaf> <sessile bubbles>
2 : permanently attached or established : not free to move about <sessile sponges and coral polyps>
Origin and Etymology of sessile
Latin sessilis of or fit for sitting, low, dwarf (of plants), from sessus, past participle of sedēre
First Known Use: circa 1753
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