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noun \ˈblast\

Simple Definition of blast

  • : a mass of air that moves very quickly and forcefully

  • : a mass of water, gas, heat, etc., that moves very quickly and forcefully through the air

  • : the loud sound made by a horn or a whistle

Source: Merriam-Webster's Learner's Dictionary

Full Definition of blast

  1. 1 a :  a violent gust of wind b :  the effect or accompaniment (as sleet) of such a gust

  2. 2 :  the sound produced by an impulsion of air through a wind instrument or whistle

  3. 3 :  something resembling a gust of wind: as a :  a stream of air or gas forced through a hole b :  a vehement outburst c :  the continuous blowing to which a charge of ore or metal is subjected in a blast furnace

  4. 4 a :  a sudden pernicious influence or effect <the blast of a huge epidemic> b :  a disease of plants marked by the formation of destructive lesions on leaves and inflorescences

  5. 5 a :  an explosion or violent detonation b :  the shock wave of an explosion c :  a forceful hit (as in baseball) or shot (as in soccer or golf); especially :  home run

  6. 6 :  speed, capacity, operation <go full blast> <in full blast>

  7. 7 :  an enjoyably exciting experience, occasion, or event <I had a blast>; especially :  party

blast from the past

  1. :  a striking reminder of an earlier time :  something that excites nostalgia

Examples of blast in a sentence

  1. She opened the door and felt a cold blast.

  2. He was hit by a blast of water from the hose.

  3. The driver gave a long blast on his horn.

  4. the blast of the factory whistle

  5. The bomb blast killed eight people.

Origin and Etymology of blast

Middle English, from Old English blǣst; akin to Old High German blāst blast, blāsan to blow, Old English blāwan — more at blow

First Known Use: before 12th century




Simple Definition of blast

  • : to destroy, break apart, or remove (something) with an explosive

  • : to create (a space or opening) with explosives

  • : to strongly criticize (someone or something) especially in public

Source: Merriam-Webster's Learner's Dictionary

Full Definition of blast

  1. intransitive verb
  2. 1 :  blare <music blasting from the radio>

  3. 2 :  to make a vigorous attack

  4. 3 a :  to use an explosive b :  shoot

  5. 4 :  to hit a golf ball out of a sand trap with explosive force

  6. 5 :  to proceed rapidly or aggressively <blasting down the ski slope>

  7. transitive verb
  8. 1 a :  to injure by or as if by the action of wind b :  blight

  9. 2 a :  to shatter by or as if by an explosive b :  to remove, open, or form by or as if by an explosive c :  shoot

  10. 3 :  to attack vigorously

  11. 4 :  to cause to blast off <will blast themselves from the moon's surface>

  12. 5 :  to hit vigorously and effectively <blasted a home run>

  13. 6 :  to play loudly <blasting rock music on the stereo>



Examples of blast in a sentence

  1. Workers were blasting rock where the new highway will go.

  2. The rock has been blasted away.

  3. The explosion blasted a hole in the side of the ship.

  4. The mayor was blasted by the local press.

  5. The judge blasted the lawyers for delaying the trial.

  6. Human rights groups have blasted the government for its treatment of political prisoners.

  7. He blasted his rival with a pistol.

  8. A gunship blasted enemy headquarters.

  9. They blasted the enemy plane out of the sky.

14th Century

First Known Use of blast

14th century


combining form

Definition of blast-

  1. :  bud :  budding :  germ <blastodisc> <blastula>

Variants of blast-



Origin and Etymology of blast-

German, from Greek, from blastos


noun combining form \ˌblast\

Definition of -blast

  1. :  formative unit especially of living matter :  germ :  cell :  cell layer <epiblast>

Origin and Etymology of -blast

New Latin -blastus, from Greek blastos bud, shoot, from blastanein to bud, sprout

BLAST Defined for Kids



noun \ˈblast\

Definition of blast for Students

  1. 1 :  the sound made by a wind instrument <the blast of a whistle>

  2. 2 :  explosion 1

  3. 3 :  a strong gust of wind <icy blasts of winter>

  4. 4 :  a stream of air or gas forced through an opening

  5. 5 :  a very enjoyable experience <The party was a blast.>




Definition of blast for Students



  1. 1 :  to break to pieces by an explosion :  shatter <blast rock>

  2. 2 :  to hit with great force <He blasted a home run.>

  3. 3 1shoot 2

  4. 4 :  to hit (someone or something) with something (as air or water) that is moving forcefully <She blasted us with water from the hose.>

  5. 5 :  to make a loud unpleasant sound <a television blasting>

  6. 6 :  to strongly criticize <He was blasted for the mistake.>

blast off

  1. :  to take off <The rocket blasted off.>

Medical Dictionary



noun \ˈblast\

Medical Definition of blast

  1. 1:  an explosion or violent detonation

  2. 2:  the violent effect produced in the vicinity of an explosion that consists of a wave of increased atmospheric pressure followed by a wave of decreased atmospheric pressure






Medical Definition of blast

Seen and Heard

What made you want to look up blast? Please tell us where you read or heard it (including the quote, if possible).


of a yellow-green or bluish-gray color

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