dis·si·pate (d s  -p t )v. dis·si·pat·ed, dis·si·pat·ing, dis·si·pates v.tr. 1. To drive away; disperse. 2. To attenuate to or almost to the point of disappearing: The wind finally dissipated the smoke. See Synonyms at scatter. 3. a. To spend or expend intemperately or wastefully; squander. b. To use up, especially recklessly; exhaust: dissipated their energy. See Synonyms at waste. 4. To cause to lose (energy, such as heat) irreversibly. v.intr. 1. To vanish by dispersion: The dark clouds finally dissipated. 2. To indulge in the intemperate pursuit of pleasure. [Middle English dissipaten, from Latin dissip re, dissipt-.]dis si·pater, dissi·pator n.dis si·pative adj. |
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