noun
Meaning 1
The optical axis.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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No pronunciation record was provided for this word.
noun
The optical axis.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The direction in which a ray of light passing through a crystal does not suffer double refraction.
Definition source: English Wiktionary via Wiktextract
Topics: chemistry, crystallography, geography, geology, mineralogy, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted
Definition source: Princeton WordNet 3.0
Synonyms: principal axis
Antonyms: none provided
Broader terms: axis
noun
in a doubly refracting crystal, the line in the direction of which no double refraction occurs
Definition source: Princeton WordNet 3.0
Synonyms: none provided
Antonyms: none provided
Broader terms: axis
History
No etymology was provided for this word.