Definitions

1. adjective

shaped like a half-moon or crescent

“The semilunar shape of the crescent moon was visible in the night sky.”

2. noun

a structure, especially in the ear, shaped like a half-moon or crescent

“The semilunar canal in the human ear helps with balance and equilibrium.”

3. noun

a type of leaf or seedling, especially one that is shaped like a half-moon or crescent

“The semilunar shape of the seedling made it easy to spot among the other plants.”