adjective
- capable of holding much; spacious or roomy: a capacious storage bin.
adjective
- capable of holding much; roomy; spacious
1610s, “able to contain,” from Latin capax (genitive capacis) “able to take in,” from capere “to take” (see capable) + -ous. Meaning “able to hold much” is from 1630s. Related: Capaciously; capaciousness.