活动过强，机能亢进：活动异常地增加。小儿活动过强以不停地探索性与试验性活动为特征，常伴有注意力分散和经不住挫折，一般到青春期减轻，亦可由大脑损伤和精神病引起- isochromosome
- isochronal
- isochronia
- isochronic
- isochronism
- isochronous
- isochroous
- isocitrate
- isocitrate dehydrogenase
- isocitric acid
- isocoagulase
- isocolloid
- isocomplementophilic
- isoconazole
- isocoria
- isocortex
- isocreatinine
- Isocrin
- isocyanide
- isocyclic
- isocytolysine
- isocytosis
- isodactylism
- isodesmosine
- isodiametric