lepadoid,a.andn.|ˈlɛpədɔɪd| [f.Gr. λεπαδ-, λέπας limpet + -oid.] a.adj. Resembling a barnacle or goose-mussel. b.n. A lepadoid animal. 1843Owen Invertebr. An. I. xiii. 155 The Cirripedes are divided..into two primary groups,—viz. the pedunculated, or Lepadoids, and the sessile, or Balanoids.