vestigial

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vestigial •beau idéal, ideal, real, surreal •labial • microbial • connubial •adverbial, proverbial •prandial • radial • medial • mondial •cordial, exordial, primordial •custodial, plasmodial •preludial • collegial • vestigial •monarchial • Ezekiel • bronchial •parochial • pallial • Belial •familial, filial •proemial • binomial • Nathaniel •bicentennial, biennial, centennial, decennial, millennial, perennial, Tenniel, triennial •cranial •congenial, genial, menial, venial •finial, lineal, matrilineal, patrilineal •corneal •baronial, ceremonial, colonial, matrimonial, monial, neocolonial, patrimonial, testimonial •participial • marsupial •burial, Meriel •terrestrial •actuarial, adversarial, aerial, areal, bursarial, commissarial, filarial, malarial, notarial, secretarial, vicarial •Gabriel •atrial, patrial •vitriol •accessorial, accusatorial, advertorial, ambassadorial, arboreal, armorial, auditorial, authorial, boreal, censorial, combinatorial, consistorial, conspiratorial, corporeal, curatorial, dictatorial, directorial, editorial, equatorial, executorial, gladiatorial, gubernatorial, immemorial, imperatorial, janitorial, lavatorial, manorial, marmoreal, memorial, monitorial, natatorial, oratorial, oriel, pictorial, piscatorial, prefectorial, professorial, proprietorial, rectorial, reportorial, sartorial, scriptorial, sectorial, senatorial, territorial, tonsorial, tutorial, uxorial, vectorial, visitorial •Umbriel • industrial •arterial, bacterial, cereal, criterial, ethereal, ferial, funereal, immaterial, imperial, magisterial, managerial, material, ministerial, presbyterial, serial, sidereal, venereal •mercurial, Muriel, seigneurial, tenurial, Uriel •entrepreneurial •axial, biaxial, coaxial, triaxial •uncial • lacteal •bestial, celestial •gluteal •convivial, trivial •jovial, synovial •alluvial, diluvial, fluvial, pluvial •colloquial, ventriloquial •gymnasial • ecclesial • ambrosial

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ves·tig·i·al / veˈstij(ē)əl/ • adj. forming a very small remnant of something that was once much larger or more noticeable: he felt a vestigial flicker of anger from last night. ∎  Biol. (of an organ or part of the body) degenerate, rudimentary, or atrophied, having become functionless in the course of evolution: the vestigial wings of kiwis are entirely hidden. DERIVATIVES: ves·tig·i·al·ly adv.

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vestigial (ves-tij-iăl) adj. existing only in a rudimentary form. The term is applied to organs whose structure and function have diminished during the course of evolution.