(slang, vulgar) The penis.

Alternative form of in the meantime

plural of full metal jacket

Alternative form of measurement problem

(quantum mechanics) The unresolved problem of what causes a wavefunction to collapse into an eigenstate, or whether wavefunctions collapse at all.

a subgenre of heavy metal with progressive rock influences

(biochemistry) Any of a class of proteins that adhere only temporarily to the biological membrane with which they are associated.

(biochemistry) A protein (or assembly of proteins) that is permanently attached to a biological membrane.

plural of integral membrane protein

plural of peripheral membrane protein