Envelope
nounverified·updated May 18, 2026
a flat (usually rectangular) container for a letter, thin package, etc.
Framework senses
- §1
- any wrapper or covering
- §2
- a flat (usually rectangular) container for a letter, thin package, etc.
- §3
- the bag containing the gas in a balloon
- §4
- the maximum operating capability of a system (especially an aircraft)
- §5
- a natural covering made out of liquid or gas
- §6
- a curve that is tangent to each of a family of curves