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Webster 1913 Edition

Noun.

(Chem.)

A form of the voltaic battery having large plates, used for producing rapid and powerful combustion.

Sitting with their knees

deflected

under them.

Lord (1630).

Noun.

A galvanic instrument for producing combustion, particularly the combustion of metallic substances.

deflagrator ‎(plural deflagrators)

dēflagrātor