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blast (blast)

1. an immature stage in cellular development before appearance of the definitive characteristics of the cell; used also as a word termination (see -blast ).

2. blast cell (2).

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blast (blast) the wave of air pressure produced by the detonation of high-explosive bombs or shells or by other explosions; it causes pulmonary concussion and hemorrhage (lung blast, blast chest), laceration of other thoracic and abdominal viscera, ruptured eardrums, and minor effects in the central nervous system.

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blast

1. an immature stage in cellular development before appearance of the definitive characteristics of the cell; used also as a word termination, as in ameloblast, etc.

2. the wave of air pressure produced by the detonation of high-explosive bombs or shells or by other explosions; it causes pulmonary damage and hemorrhage (lung blast, blast chest), laceration of other thoracic and abdominal viscera, ruptured eardrums, and effects in the central nervous system.

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blast cells

the precursor cells of bone marrow. See also myeloblast, monoblast, erythroblast, megakaryoblast.