英语词汇orthodontia的起源、历史背景-英语词源词典

词汇	orthodontia
词源	orthodontia n. "the branch of dentistry concerned with the treatment of irregularities of the teeth and jaws," 1849, from ortho- "straight, regular" + Greek odon (genitive odontos) "tooth" (from PIE root dent- "tooth") + abstract noun ending -ia. Entries linking to orthodontia* ortho- before vowels orth-, word-forming element meaning "straight, upright, rectangular, regular; true, correct, proper," now mostly in scientific and technical compounds, from Greek orthos "straight, true, correct, regular," from PIE eredh- "high" (source also of Sanskrit urdhvah "high, lofty, steep," Latin arduus "high, steep," Old Irish ard "high"). dent- Proto-Indo-European root meaning "tooth." It forms all or part of: al dente; dandelion; dental; dentifrice; dentist; dentition; denture; glyptodon; indent (v.1) "to make notches;" mastodon; orthodontia; periodontal; teethe; tooth; toothsome; tusk; trident. It is the hypothetical source of/evidence for its existence is provided by: Sanskrit danta, Greek odontos (gen.), Latin dens, Lithuanian dantis, Old Irish det, Welsh dent, Old English toð, German Zahn, Gothic tunþus "tooth." ortho-*dent--iaorthodontic (adj.)orthodontist (n.) updated on October 02, 2019
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orthodontia n.