Third-person singular simple present indicative form of envelop

Something which envelops

Synonym of hongbao

(idiomatic, humorous, in hypothetical constructs) Any kind of event or activity that may contribute to one's self-promotion or visibility in society.

Alternative form of back-of-the-envelope

The area in which a robot, or any part of one, can move around.

(idiomatic) Approximate, rough, simplified, especially of a calculation, estimation or other reasoning.

(intransitive, idiomatic, originally aeronautics) To go beyond established limits; to pioneer.

(biology) nuclear membrane

plural of nuclear envelope