infantile spasm n.
Brief muscular spasms in infants, usually lasting from one to three seconds and often appearing as nodding spasms.
[in-fuh n-tl-iz-uh m, -tahy-liz-, in-fan-tl-iz-uh m] /ˈɪn fən tlˌɪz əm, -taɪˌlɪz-, ɪnˈfæn tlˌɪz əm/ noun 1. the persistence in an adult of markedly childish anatomical, physiological, or psychological characteristics. 2. an act, trait, etc., especially in an adult. 3. a speech disorder characterized by speech and voice patterns that are typical of very young children. […]
[in-fuh n-tahyl, -til] /ˈɪn fənˌtaɪl, -tɪl/ adjective 1. characteristic of or befitting an ; babyish; childish: infantile behavior. 2. of or relating to or : infantile diseases. 3. Physical Geography. (def 5). /ˈɪnfənˌtaɪl/ adjective 1. like a child in action or behaviour; childishly immature; puerile 2. of, relating to, or characteristic of infants or infancy […]
[in-fuh n-tl-ahyz, -tahy-lahyz, in-fan-tl-ahyz] /ˈɪn fən tlˌaɪz, -taɪˌlaɪz, ɪnˈfæn tlˌaɪz/ verb (used with object), infantilized, infantilizing. 1. to keep in or reduce to an infantile state. 2. to treat or regard as infantile or immature.
[in-fuh n-tahyn, -tin] /ˈɪn fənˌtaɪn, -tɪn/ adjective 1. .