Meaning of Envelope
Bangla: খাম, লেফাফা, মোড়ক, আচ্ছাদন
लिफाफा, आवरण, वेष्टन
Unknown / অজানা / अज्ञात
a flat paper container, as for a letter or thin package, usually having a gummed flap or other means of closure.
something that envelops; a wrapper, integument, or surrounding cover.
Biology. a surrounding or enclosing structure, as a corolla or an outer membrane.
Geometry. a curve or surface tangent to each member of a set of curves or surfaces.
Radio. (of a modulated carrier wave) a curve connecting the peaks of a graph of the instantaneous value of the electric or magnetic component of the carrier wave as a function of time.