Standard Lemma 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.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
noun
A passage or underpass where a roadway, railway, or infrastructure crosses under another.
Definition source: English Wiktionary via Wiktextract
Topics: engineering, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
The strand or segment in a knot diagram that passes beneath another at a crossing; i.e., the under‐crossing strand in a knot projection. As distinguished from the overcrossing or over‐strand in knot projections
Definition source: English Wiktionary via Wiktextract
Qualifier: knot theory
Topics: mathematics, sciences, topology
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From under- + cross.
