pseudomorph

noun
pseu·do·morph | \ ˈsü-də-ˌmȯrf \

Definition of pseudomorph 

1 : a mineral having the characteristic outward form of another species

2 : a deceptive or irregular form

Other words from pseudomorph

pseudomorphic \ˌsü-də-ˈmȯr-fik \ adjective
pseudomorphism \ˌsü-də-ˈmȯr-ˌfi-zəm \ noun
pseudomorphous \ˌsü-də-ˈmȯr-fəs \ adjective

First Known Use of pseudomorph

1839, in the meaning defined at sense 1

History and Etymology for pseudomorph

probably from French pseudomorphe, from pseud- + -morphe -morph

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The first known use of pseudomorph was in 1839

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