Anhedral is a term that is often used in the field of geology and mineralogy. It describes the shape of a crystal or mineral that lacks a flat or planar surface. In this article, we will explore the definition, origin, and meaning of anhedral, as well as its associations, synonyms, and antonyms.
Definitions
Anhedral is a term that is used to describe a crystal or mineral that lacks a flat or planar surface. This means that the crystal or mineral has an irregular shape with no distinct faces or edges. Anhedral minerals are often formed in environments where there is limited space for crystal growth or where the crystal is subjected to deformation or stress.
Origin
The term anhedral comes from the Greek words “an” meaning “without” and “hedra” meaning “face” or “plane.” The term was first used in the field of mineralogy in the early 20th century to describe crystals that lacked flat or planar surfaces.
Meaning in different dictionaries
According to the Merriam-Webster dictionary, anhedral is defined as “having no plane faces or edges.” The Oxford English Dictionary defines anhedral as “having no plane faces or edges, or having only irregular or curved faces.”
Associations
Anhedral minerals are often associated with metamorphic rocks, which are rocks that have been transformed by heat and pressure. They are also commonly found in volcanic rocks, which are formed from molten lava.
Synonyms
Synonyms for anhedral include irregular, non-crystalline, amorphous, and shapeless.
Antonyms
Antonyms for anhedral include euhedral, which describes crystals with well-defined faces and edges, and subhedral, which describes crystals with partially developed faces and edges.
The same root words
The same root words as anhedral include “anhydrous,” which describes a substance that contains no water, and “anhedonia,” which describes a condition where an individual is unable to experience pleasure.
Example Sentences
- The anhedral crystals in this rock were formed under intense pressure and heat.
- The mineral had an anhedral shape, with no distinct faces or edges.
- The volcanic rock was full of anhedral minerals, which gave it a unique texture.
- The anhedral crystals in this sample were difficult to identify due to their irregular shape.
- The anhedral nature of this mineral made it difficult to cut and polish for use in jewelry.