erectile
adj.adj. describing something that can become firm or hard, especially when it is excited. In biology, it refers to parts of the body that can change shape to help with reproduction.
adj. capable of becoming firm or rigid, typically in response to stimulation. In a biological context, refers to organs or tissues that undergo such a change to facilitate sexual function.
The plant has an erectile stem that grows toward the light.
The doctor explained that the erectile tissue in the penis requires a steady flow of blood to maintain its firm state.
In many species, the erectile display of plumage serves as a primary signal during the mating season, often involving rapid inflation of specialized feathers to appear larger and more intimidating.
From French érectile, from Latin erectus, past participle of erigere, equivalent to erect + -ile.