= monostichous, adj. 1.

designating a crystal form in which each edge and angle has decreased.

Chemistry and Mineralogy. Having the property of crystallizing in the same or closely related geometric forms: said esp. of two compounds or…

Chemistry and Mineralogy. Crystallizing in two or more forms, esp. in forms belonging to different crystal systems; chemically identical but…

Mineralogy. Designating a mineral occurring in prismatic crystals whose facets intersect at various different angles. Obsolete. rare.

Chemistry and Mineralogy. Exhibiting isomorphism, isomorphous; pertaining to or involving isomorphism.

Crystallography. Not furnished with a twin.

= xenomorphic adj. at xeno-, comb._form affix. Contrasted with idiomorphic, adj. Cf. anhedral, adj.

applied to mineral constituents of a rock having a form different from the normal in consequence of the pressure of other constituents.

Chemistry and Mineralogy. = polymorphous, adj. 2.

having the same or similar crystal structure; const. with.

Mineralogy. Having the same or similar crystal structure (i.e. isostructural) and, with some authors, having in addition analogous chemical formulæ…