tonic spasm

tonnage Pathol.: A convulsion in which the muscular contractions are partial, of considerable duration, and without unconsciousne , the affected muscles themselves being hard. *ton-Ic-al, a. [Eng. tonic; -al.] Tonic. "One kind of motion relating unto that which physicians do name extensive or tonical ."- Browne : Vulgar Errors, bk. iii., ch. i.