amorphous

[ uh-mawr-fuhs ]
/ əˈmɔr fəs /

adjective

lacking definite form; having no specific shape; formless: the amorphous clouds.
of no particular kind or character; indeterminate; having no pattern or structure; unorganized: an amorphous style; an amorphous personality.
Petrography, Mineralogy. occurring in a mass, as without stratification or crystalline structure.
Chemistry. not crystalline.
Biology. having structural components that are not clearly differentiated, as the nuclear material in certain bacteria.

Origin of amorphous

First recorded in 1725–35, amorphous is from the Greek word ámorphos shapeless. See a-6, -morph, -ous

OTHER WORDS FROM amorphous

a·mor·phous·ly, adverb a·mor·phous·ness, noun

Words nearby amorphous

Example sentences from the Web for amorphous

British Dictionary definitions for amorphous

amorphous
/ (əˈmɔːfəs) /

adjective

lacking a definite shape; formless
of no recognizable character or type
(of chemicals, rocks, etc) not having a crystalline structure

Derived forms of amorphous

amorphism, noun amorphously, adverb amorphousness, noun

Word Origin for amorphous

C18: from New Latin, from Greek amorphos shapeless, from a- 1 + morphē shape

Medical definitions for amorphous

amorphous
[ ə-môrfəs ]

adj.

Lacking definite form; shapeless.
Lacking organization; formless.
Lacking distinct crystalline structure.

Scientific definitions for amorphous

amorphous
[ ə-môrfəs ]

Not made of crystals. Glass, amber, and plastics are amorphous substances.
Lacking definite form or shape.