Toward the tail or rear end of an organism; in the direction of the caudal region, using the English directional suffix -ward.
From caudal (tail-related) plus the English directional suffix -ward (meaning 'toward'), combining Latin anatomy terminology with Germanic directional language.
This word is a perfect example of English's polyglot nature—it takes a Latin anatomical term and grafts an Old English directional suffix onto it, creating a hybrid word that's more English than purely Latin.
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