[{"word":"envelopes","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.","synonyms":[],"antonyms":[]},{"definition":"Something that envelops; a wrapping.","synonyms":[],"antonyms":[]},{"definition":"A bag containing the lifting gas of a balloon or airship; fabric that encloses the gas-bags of an airship.","synonyms":[],"antonyms":[]},{"definition":"A mathematical curve, surface, or higher-dimensional object that is the tangent to a given family of lines, curves, surfaces, or higher-dimensional objects.","synonyms":[],"antonyms":[]},{"definition":"A curve that bounds another curve or set of curves, as the modulation envelope of an amplitude-modulated carrier wave in electronics.","synonyms":[],"antonyms":[]},{"definition":"The shape of a sound, which may be controlled by a synthesizer or sampler.","synonyms":[],"antonyms":[]},{"definition":"The information used for routing a message that is transmitted with the message but not part of its contents.","synonyms":[],"antonyms":[]},{"definition":"An enclosing structure or cover, such as a membrane; a space between two membranes","synonyms":[],"antonyms":[]},{"definition":"The set of limitations within which a technological system can perform safely and effectively.","synonyms":[],"antonyms":[]},{"definition":"The nebulous covering of the head or nucleus of a comet; a coma.","synonyms":[],"antonyms":[]},{"definition":"An earthwork in the form of a single parapet or a small rampart, sometimes raised in the ditch and sometimes beyond it.","synonyms":[],"antonyms":[]}],"synonyms":["gasbag","wrapper"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/envelope","https://en.wiktionary.org/wiki/envelopes"]}]