trigonal

As an adjective trigonal

is symmetrically triangular.

As a noun fougerite is

(mineral) a trigonal clay mineral that is chemically and structurally related to green rust.

As adjectives the difference between trigonal and nontrigonal

is that trigonal is symmetrically triangular while nontrigonal is not trigonal.

As an adjective trigonal

is symmetrically triangular.

As a noun otavite is

.

As an adjective trigonal

is symmetrically triangular.

As an adverb trigonally is

in a trigonal manner.

As an adjective trigonal

is symmetrically triangular.

As a noun arctite is

a colourless mineral made of a trigonal crystal system and found in northern Russia.

As an adjective trigonal

is symmetrically triangular.

As a noun ximengite is

(mineralogy) a trigonal mineral with chemical formula bipo₄.

As an adjective trigonal

is symmetrically triangular.

As a noun alarsite is

(mineral) a trigonal mineral with the chemical formula al[aso₄].

As an adjective trigonal

is symmetrically triangular.

As a noun monohydrocalcite is

(mineralogy) a white trigonal mineral with the chemical formula caco₃·h₂o, a hydrous form of calcium carbonate.

As an adjective trigonal

is symmetrically triangular.

As a noun pezzottaite is

(mineralogy) a caesium analogue of beryl, a silicate of caesium, beryllium, lithium and aluminium that crystallises in the trigonal system.

As an adjective trigonal

is symmetrically triangular.

As a noun akimotoite is

(mineral) a trigonal mineral of the ilmenite group with a vitreous lustre, the silicon analogue of geikielite.