Explore: Envelope

An envelope is a common packaging item, usually made of thin, flat material. It is designed to contain a flat object, such as a letter or card. Traditional

Look up envelope in Wiktionary, the free dictionary. An envelope is the paper container used to hold a letter being sent by post. Envelope may also refer

In sound and music, an envelope describes how a sound changes over time. For example, a piano key, when struck and held, creates a near-immediate initial

A red envelope, red packet, lai see (Chinese: 利是; Cantonese Yale: laih sih), hongbao or ang pau (traditional Chinese: 紅包; simplified Chinese: 红包; pinyin:

self-addressed stamped envelope (SASE), stamped self-addressed envelope (SSAE), or stamped addressed envelope (SAE) is an envelope with the sender's name

In mathematics, the lower envelope or pointwise minimum of a finite set of functions is the pointwise minimum of the functions, the function whose value

An envelope detector (sometimes called a peak detector) is an electronic circuit that takes a (relatively) high-frequency signal as input and outputs the

In mathematics and economics, the envelope theorem is a major result about the differentiability properties of the value function of a parameterized optimization

balloon is a lighter-than-air aircraft consisting of a bag, called an envelope, which contains heated air. Suspended beneath is a gondola or wicker basket

The Gaza envelope (Hebrew: עוטף עזה, otef aza) encompasses the populated areas in the Southern District of Israel that are within 7 kilometres (4.3 mi)