Discoid may refer to:
- Disk (mathematics), the region in a plane enclosed by a circle
Medicine
- Furosemide, a medication sold under the trade name Discoid
- Discoid meniscus, a human anatomical variant
- Discoid lupus erythematosus, a chronic skin condition in humans
- Canine discoid lupus erythematosus, the equivalent condition in dogs
- Nummular dermatitis, also known as discoid eczema
Biology
- Discoid head, a type of floret arrangement in Asteraceae flower heads
- Discoidal cleavage, a type of partial cleavage in embryos
- Discoidin domain, a protein domain of many blood coagulation factors
- Blaberus discoidalis, the discoid cockroach
- Dictyostelium discoideum, a slime mold
Other
- Discoidal stele, a funerary stele type found in Basque country