## diagonal

di·ag·o·nal / dīˈagənl/ (abbr.: diag.) • adj. (of a straight line) joining two opposite corners of a square, rectangle, or other straight-sided shape. ∎  (of a line) straight and at an angle; slanting: a tie with diagonal stripes. • n. a straight line joining two opposite corners of a square, rectangle, or other straight-sided shape. ∎  Math. the set of elements of a matrix that lie on a line joining two opposite corners. ∎  a slanting straight pattern or line: the bars of light made diagonals across the entrance tiles can be laid on the diagonal. ∎  Chess a slanting row of squares whose color is the same. DERIVATIVES: di·ag·o·nal·ly adv.

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"diagonal." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 27 May. 2017 <http://www.encyclopedia.com>.

"diagonal." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (May 27, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/diagonal-0

"diagonal." The Oxford Pocket Dictionary of Current English. . Retrieved May 27, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/diagonal-0

## diagonal

diagonal XVI. — L. diagōnālis, f. Gr. diagṓnios, f. DIA- + gōníā angle; see -AL 1.

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"diagonal." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 27 May. 2017 <http://www.encyclopedia.com>.

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"diagonal." The Concise Oxford Dictionary of English Etymology. . Retrieved May 27, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/diagonal-1

## diagonal

diagonal. See buttress and vault.

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"diagonal." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. 27 May. 2017 <http://www.encyclopedia.com>.

"diagonal." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. (May 27, 2017). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/diagonal

"diagonal." A Dictionary of Architecture and Landscape Architecture. . Retrieved May 27, 2017 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/diagonal

## diagonal

diagonalannal, channel, flannel, impanel, multichannel, panel •cracknel •grapnel, shrapnel •carnal •antennal, crenel, fennel, kennel •regnal •anal, decanal •adrenal, officinal, penal, renal, venal •signal, spignel •hymnal • cardinal • libidinal • ordinal •attitudinal, latitudinal, longitudinal •altitudinal •imaginal, paginal •marginal, submarginal •aboriginal • virginal • disciplinal •seminal •criminal, liminal, subliminal •abdominal, nominal, phenomenal, pronominal •noumenal •germinal, terminal •vaticinal, vicinal •sentinel • intestinal • Juvenaldoctrinal, final, semi-final, spinal, urinal, vaginal •quarterfinal •cantonal, O'Connell •cornel • nounal •atonal, Donal, hormonal, Monel, patronal, polytonal, tonal, zonal •motional •lagoonal, monsoonal, tribunal •communal •Chunnel, funnel, gunnel, gunwale, runnel, tunnel •autumnal • meridional •embryonal, Lionel •diagonal, heptagonal, hexagonal, octagonal, tetragonal •trigonal • orthogonal • occasional •divisional, provisional, visional •delusional, fusional, illusional •regional • original • coronal • arsenal •medicinal •impersonal, interpersonal, personal, transpersonal •irrational, national, passional, rational •factional, fractional, redactional, transactional •confessional, congressional, expressional, impressional, obsessional, processional, professional, progressional, recessional, secessional, sessional, successional •connectional, correctional, directional, interjectional, intersectional, sectional, unidirectional •ascensional, attentional, conventional, declensional, intentional, tensional, three-dimensional, two-dimensional •conceptional, exceptional, perceptional •durational, locational, oblational, relational, vocational •rotational •additional, positional, tuitional, volitional •fictional, jurisdictional •inscriptional • optional • proportional •devotional, emotional, notional, promotional •constitutional, evolutional, institutional, substitutional •constructional, fluxional, instructional •conjunctional, dysfunctional, functional, multifunctional •versional • seasonal •colonel, diurnal, eternal, external, fraternal, infernal, internal, journal, kernel, maternal, nocturnal, paternal, supernal, vernal