/ əˈmɔːfəs; NAmE -ˈmɔːrf-/ adjective
[ usually before noun ] ( formal ) having no definite shape, form or structure
SYN shapeless :
an amorphous mass of cells with no identity at all
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WORD ORIGIN
mid 18th cent.: from modern Latin amorphus , from Greek amorphos shapeless (from a- without + morphē form) + -ous .