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
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No pronunciation record was provided for this word.
adj
Of or relating to a means of navigation by following an arc of the great circle corresponding to the shortest distance between two points on the globe.
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
adj
Passing along neurological impulses in a normal (expected) direction. (of neurons)
Definition source: English Wiktionary via Wiktextract
Usage: not-comparable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: antidromic
History
Etymology tree Proto-Indo-European *h3erdh-der. Proto-Hellenic *orthwós Ancient Greek ὀρθός (orthós)lbor. English ortho- Proto-Indo-European *drem- Proto-Indo-European *-os Proto-Hellenic *-os Ancient Greek -ος (-os) Ancient Greek δρόμος (drómos) Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English orthodromic From ortho- + Ancient Greek δρόμος (drómos, “a course, race course, road”) + English -ic.
Across languages
1 source translations are retained for this English entry.
