Lenticel, n. [F. lenticelle, dim. fr. L. lens, lentis, a lentil. Cf. Lentil.].
One of the small, oval, rounded spots upon the stem or branch of a plant, from which the underlying tissues may protrude or roots may issue, either in the air, or more commonly when the stem or branch is covered with water or earth. [1913 Webster]