trigonal

/'trigənl/

Thân thiện

A snowflake has a beautiful trigonal shape.

Definition

1. Adjective:
   • Having threefold symmetry: Describes a shape, structure, or crystal system characterized by symmetry around a central axis, where identical parts repeat three times in a full 360-degree rotation.
   • Triangular in cross-section: Describes an object, especially in botany or zoology, whose cross-section is shaped like a triangle.

Examples of Usage

• Adjective:
  • Quartz crystals often have a trigonal structure.
  • The stem of the plant was trigonal, giving it a distinctive shape.

Advanced Usage

• In Crystallography: The term is used to describe a crystal system (the trigonal crystal system) that is a subdivision of the hexagonal system, characterized by a single threefold axis of rotation.
  • Calcite is a mineral that crystallizes in the trigonal system.

Variants and Related Words

• Trigonaly (adv., rare): In a trigonal manner.
• Trigonal Bipyramidal (adj. phrase): A molecular geometry in chemistry where a central atom is surrounded by five atoms, forming a shape with two distinct triangular-based pyramids sharing a base.
• Trigonal Planar (adj. phrase): A molecular geometry where three atoms are arranged in a flat triangle around a central atom.

Synonyms

• Triangular: Having three angles and three sides.
• Threefold: Consisting of three parts or having triple symmetry.

Related Phrases

• Trigonal Symmetry: The specific type of symmetry characterized by a threefold rotational axis.
  • The snowflake exhibits trigonal symmetry.

Học thuật

Adjective

1. having threefold symmetry

Từ đồng nghĩa

• rhombohedral