American Heritage® Dictionary of the English Language, Fourth Edition
- v. To enclose or encase completely with or as if with a covering: "Accompanying the darkness, a stillness envelops the city” ( Curtis Wilkie).
- v. To attack (an enemy's flank).
Century Dictionary and Cyclopedia
- To cover, as by wrapping or folding; inwrap; invest with or as with a covering; surround entirely; cover on all sides.
- To form a covering about; lie around and conceal.
- To line; cover on the inside.
- Synonyms To encircle, encompass, infold, wrap up.
- n. A wrapper; an inclosing cover; an integument: as, the envelop of a seed. Specifically
- n. A prepared wrapper for a letter or other paper, so made that it can be sealed.
- n. In fortification, a work of earth in form of parapet, or of a small rampart with a parapet, raised to cover some weak part of the works.
- n. In astronomy, a shell partly surrounding the nucleus of a comet on the side next the sun and away from the tail, and appearing like a semicircular arch. Large comets generally show several of these under the telescope. They successively rise from the nucleus and disappear.
- n. In geometry, a curve or surface touching a continuous series of curves or surfaces. Thus, suppose a plane curve to undergo a continuous change in its shape and position; then the curve as it is at any instant is intersected by the curve as it is at any subsequent instant, and the closer the second instant follows after the first the closer do these intersections approach certain positions on the first curve. These positions are points on the envelop, and in this way all the points on the envelop are determined. If t is a variable parameter, and P = 0 is the equation of the surface, then the equation obtained by eliminating t between P = 0 and dP/dt = 0 is the equation to the envelop. Or if there are two variable parameters, s and t, the equation of the envelop is obtained by eliminating them between P = 0, dP/ds = 0, and dP/dt = 0. Every curve may thus be regarded as an envelop. Caustics, evolutes, etc., are so by their definitions.
GNU Webster's 1913
- v. To put a covering about; to wrap up or in; to inclose within a case, wrapper, integument or the like; to surround entirely
- v. enclose or enfold completely with or as if with a covering
- From Middle English envolupen, from Old French envoluper (modern French envelopper), from en- "in" + voloper, vloper "to wrap, wrap up" (compare Italian -viluppare; Old Italian alternate form goluppare "to wrap") from Vulgar Latin base *vlopp-, *wlopp- "to wrap" from Proto-Germanic *wrappan-, *wlappan- (“to wrap, roll up, turn, wind”), from Proto-Indo-European *werb- (“to turn, bend”) . Akin to Middle English wlappen ("to wrap, fold") (Modern English lap "to wrap, involve, fold"), Middle English wrappen ("to wrap"), Middle Dutch lappen ("to wrap up, embrace"), Danish dialectal vravle "to wind, twist", Middle Low German wrempen "to wrinkle, distort", Old English wearp ("warp"). More at in, wrap (Wiktionary)
- Middle English envolupen, to be involved in, from Old French envoluper, envoloper : en-, in; see en-1 + voloper, to wrap up. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Accumulate all the possible circumstances which shall reinforce the right motives; put yourself assiduously in conditions that encourage the new way; make engagements incompatible with the old; take a public pledge, if the case allows; in short, envelop your resolution with every aid you know.”
“Now, that, "she added, holding out a blue envelop," is an advertisement for cold cream which no lady should be without; and that "– holding out a yellow envelop –" is an advertisement for beef extract which no brainworker should be without; and that "– holding out a white envelop –" is the worst of all, because it looks like a legitimate letter, and it 's nothing but a 'Dear”
“Accumulate all the possible circumstances which shall re-enforce the right motives; put yourself assiduously in conditions that encourage the new way; make engagements incompatible with the old; take a public pledge, if the case allows; in short, envelop your resolution with every aid you know.”
“I have here a note," Mr. Bronson said after another pause, in which he picked up an envelop from the table and drew forth a written sheet.”
“_ Accumulate all the possible circumstances which shall reinforce the right motives; put yourself assiduously in conditions that encourage the new way; make engagements incompatible with the old; take a public pledge, if the case allows; in short, envelop your resolution with every aid you know. ”
“Not much in the way of details and the picture seems to show a unit with a front panel printed on paper and folded round the box, but the Jomox M-Resonator looks interesting - some kind of envelop-following dual filter that uses technology from the cricket-chirrup-generating Resonator Neuronium.”
“The "envelop" was probably similar to the wooden ones found by Stein in the Tarim basin; cf. Serindia, vol. IV, pl. xxi.”
“The cheese shouldn't be runny, but should envelop the bread.”
“Not a day goes by that history does not envelop me in ways that inform the present, through the narratives of ordinary people, places and events.”
“Congress now faces questions that could envelop December in another round of partisan jockeying.”
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