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bolting
bolt 1 B0376700 (bōlt)n.1. A bar made of wood or metal that slides into a socket and is used to fasten doors and gates.2. A metal bar or rod in the mechanism of a lock that is thrown or withdrawn by turning the key.3. A fastener consisting of a threaded pin or rod with a head at one end, designed to be inserted through holes in assembled parts and secured by a mated nut that is tightened by applying torque.4. a. A sliding metal bar that positions the cartridge in breechloading rifles, closes the breech, and ejects the spent cartridge.b. A similar device in any breech mechanism.5. A short, heavy arrow with a thick head, used especially with a crossbow.6. A flash of lightning; a thunderbolt.7. A sudden or unexpected event: The announcement was a veritable bolt.8. A sudden movement toward or away.9. A large roll of cloth of a definite length, especially as it comes from the loom.v. bolt·ed, bolt·ing, bolts v.tr.1. To secure or lock with or as if with a bolt.2. To arrange or roll (lengths of cloth, for example) on or in a bolt.3. To eat (food) hurriedly and with little chewing; gulp.4. To desert or withdraw support from (a political party).5. To utter impulsively; blurt.6. Archaic To shoot or discharge (a missile, such as an arrow).v.intr.1. To move or spring suddenly.2. To start suddenly and run away: The horse bolted at the sound of the shot. The frightened child bolted from the room.3. To break away from an affiliation, as from a political party.4. Botany To flower or produce seeds prematurely or develop a flowering stem from a rosette.Idioms: bolt from the blue A sudden, shocking surprise or turn of events. bolt upright In a rigidly vertical position: sat bolt upright.
[Middle English, from Old English, heavy arrow.]
bolt 2 B0376700 (bōlt)tr.v. bolt·ed, bolt·ing, bolts To pass (flour, for example) through a sieve.
[Middle English bulten, from Old French buleter, from Middle High German biuteln, from biutel, bag, purse.]boltingThe premature opening of flowers and production of seed, sometimes brought on by stress due to heat or drought.IdiomsSeeboltBolting
bolting[′bōl·tiŋ] (engineering) A fastening system using screw-threaded devices such as nuts, bolts, or studs. (food engineering) The process of refining or purifying, especially of sifting flour or meal through a sieve. (mining engineering) The use of vibrating sieves to separate particles of different sizes. Bolting in plants, the development of any organ of a plant from another organ that has already completed its growth. For example, a leafy shoot, a flower, or even a raceme may form from a flower; a large number of secondary and tertiary shoots may appear on a primary shoot; and secondary tubers may appear on potato tubers instead of buds. The causes of bolting may be parasitic mycoplasmic organisms that produce yellows, big bud, and pupation in plants; aphids; and ecological factors, such as severe drought. bolting
bolting an unusual lengthening of plant stems, due to elongation of cells, which can be induced by plant hormones called GIBBERELLINS producing a stem with long INTERNODES. Bolting can occur naturally, as when biennials such as cabbage and sugar beet produce elongated flower stalks in their first year rather than flowering in the second year. The problem arises when such plants are subjected to winter conditions in their first year (usually having been planted too early in the spring) which induces growth typical of the second year.FinancialSeeBolt |