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1. Biology An immature, embryonic stage in the development of cells or tissues: erythroblast.
2. Geology A crystal or mineral deposit formed in metamorphic rock: porphyroblast.
[From Greek blastos, bud, germ, of unknown origin.]
n combining form
(in biology) indicating an embryonic cell or formative layer: mesoblast.
[from Greek blastos bud]
1. a sudden and violent gust of wind.
2. the blowing of a trumpet, whistle, etc.
3. a loud, sudden sound or noise: a harsh blast from the radio.
4. a forcible stream of air from the mouth, bellows, or the like.
a. air forced into a furnace by a blower to increase the rate of combustion.
b. a jet of steam directed up a smokestack, as of a steam locomotive, to increase draft.
6. a forceful throw, hit, etc.: a blast down to third base.
7. Slang. something that gives great pleasure, esp. a party.
8. a vigorous outburst of criticism; attack.
9. the charge explosive used at one firing in blasting operations.
10. the act of exploding; explosion.
11. any pernicious or destructive influence, esp. on animals or plants; a blight.
12. the sudden death of buds, flowers, or young fruit.v.t.
13. to make a loud noise on; blow: to blast a horn.
14. to cause to shrivel or wither.
15. to ruin; destroy.
16. to shatter by or as if by an explosion.
17. to make, form, or open up by blasting: to blast a tunnel.
18. to curse; damn: Blast it, there's the phone again!
19. to criticize vigorously; denounce.
20. to hit or propel with great force.
21. to shoot.v.i.
22. to produce a loud, blaring sound.
23. to shoot.
24. to use or detonate explosives, as a charge of dynamite.
25. blast off,Idioms:
a. (of a self-propelled rocket) to leave a launch pad.
b. (of an astronaut) to travel aloft in a rocket.
(at) full blast, at maximum capacity; at or with full volume or speed.
[before 1000; Middle English; Old English blǣst a blowing]
syn: See wind1.
var. of blasto- as a final element: ectoblast.