词根词缀：cata-, cat-, cath-, kata-

【来源及含义】Greek: down, downward; under, lower; against; entirely, in accordance with, completely; definitely

【同源单词】acatalepsia, acatalepsy, acataleptic, acatamathesia, acataphasia, acataposia

词根词缀：rigi-, rig-

【来源及含义】Latin: stiff, hard, numb; to be frozen, to grow stiff with cold, to be chilled

【同源单词】acid rigor, calcium rigor, catatonic rigidity, cerebellar rigidity, clasp-knife rigidity, cogwheel rigidity

词根词缀：tono-, -tonia, -tone, -tony, -tonic, -tonical (tension)

【来源及含义】Greek: tonos = tension, pressure

【相关描述】The element tono- is a combining form with the meanings "stretching", "tension", "tone", used in the formation of compound words.

The suffix element -tonia is a combining form with the meanings of "muscle tension" or "nerve tension"; as specified by the initial element: hypertonia; used also in the formation of words that denote more generally a personality type or personality disorder; for example, catatonia and somatotonia.

【同源单词】amyotonia, amyotonic, angiohypertonia, angiohypotonia, atonia, atonic