sessile

• Se dit d'un organisme ou d'une structure qui reste fixé à un substrat et ne peut pas se déplacer librement.

Describes an organism or structure that is permanently attached to a substrate and not free to move about.

1. Permanently attachedC1formalscientific

   Fixed in one place; not able to move freely, typically used for organisms like barnacles or corals.

   Fixé en place

   • Barnacles are sessile crustaceans that attach to rocks.
   • Coral polyps are sessile in their adult stage.
   • Many marine invertebrates are sessile as adults.

   Synonymesattachedfixedimmobilenonmotilerootedstationary

   Antonymesfree-livingmobilemotilevagile

2. Without a stalkC1formalscientific

   Attached directly at the base, without a supporting stem or stalk, used for leaves, flowers, or other plant parts.

   sessile (sans pétiole)

   • The sessile leaves grow directly from the stem.
   • This plant has sessile flowers that lack a pedicel.
   • Sessile acorns are attached directly to the branch.

   Synonymesstalklessstemless

   Antonymespedunculatestalked