体中

Compound of 体 (karada, “body”) +‎ 中 (-jū, “throughout”). The chū changes to jū as an instance of rendaku (連濁). The 中 character is often read as chū in compounds, with a meaning of “middle; inside, within”, but when read as jū with rendaku, the meaning shifts to “throughout, all over”.

• 身体中 (less common)

• IPA^(key):

体(からだ)中(じゅう) • (karadajū) 

1. throughout the body, from head to foot, all over

May be from Middle Chinese compound 體／体中 (thej^X trjuwng, literally “body + center; within”).

Alternatively, may be a Japanese coinage using Middle Chinese-derived elements, as a compound of 体 (tai, “body”) + 中 (chū, “within, inside”).

• IPA^(key):

体(たい)中(ちゅう) • (taichū) 

1. the inside of the body, somewhere inside the body