| applicator | A slender rod of wood, flexible metal, or synthetic material, at one end of which is attached a pledget of cotton or other substance for making local applications to any accessible surface. Origin: L. Ap-plico, to attach to (05 Mar 2000) |
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| sonic | Of, pertaining to, or determined by sound; e.g., sonic vibration. Origin: L. Sonus, sound (05 Mar 2000) |
| sonic waves | Audible sound wave's, as distinguished from ultrasonic wave's. (05 Mar 2000) |