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tri·quet·ra 1

(trī-kwĕt′rə, -kwē′trə)
n. pl. tri·quet·rae (-trē) or tri·quet·ras
A figure consisting of three arcs joined at the ends and interlaced, used in various traditions as a religious or heraldic symbol.

[Latin, feminine of triquetrus, three-cornered; see triquetrous.]

tri·quet·ra 2

(trī-kwĕt′rə, -kwē′trə)
Plural of triquetrum.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


an ornament in the shape of three intersecting ellipses roughly forming a triangle
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Mussels in French Creek that are listed under the Endangered Species Act include: northern riffleshell (Epioblasma torulosa rangiana: G2; S2), snuffbox (Epioblasma triquetra: G3; S2), clubshell (Pleurobema clava: G2; S2), and rayed bean (Vilosa fabalis: G1G2; S1S2).
And while there are many challenges to realizing the full vision for the Grand River restoration plan, one tiny though significant concern has been successfully addressed --federally endangered snuffbox mussels (Epioblasma triquetra) occur within the project area, but partners have a plan in place to safeguard these animals.
Six species of brown seaweed (Sargassum ilicifolium, Sargassum binderi, Turbinaria decurrens, Turbinaria ornata, Padina australis and Hormophyta triquetra) has been studied the cytotoxicity activity to T41D and HeLa cell line.
Among rotifers, Asplancha priodonta was more prevailing in winter season, while other species like Lecane arcula, Polyarthra species, Euchlanis triquetra, Keratella tropica and Brachionus havanaensis were found abundant in summer.
Meanwhile, Minapharm Pharmaceuticals has announced the closure of an EGP 95.52m deal to buy a 15.76% stake in its subsidiary, Minapharm Probiogen from Triquetra BV.
Shell material of two federal and state endangered freshwater mussels (snuffbox (Epioblasma triquetra) and clubshell (Pleurobema clava)) and three state species of special concern (wavyrayed lampmussel (Lampsilis fasciola), kidneyshell (Ptychobranchus fasciolaris), and little spectaclecase (Villosa Uenosa) was collected, but none are still found live in the Fall Creek drainage.
Arap saci, Rezene (E.O.6) Heptaptera triquetra Oksuruk otu (Vent.) Tutin (ISTE 109549) Hippomarathrum cristatum Tarhana otu (DC.) Boiss.(ISTE 109553) Laser trilobum (L.) Yabani kimyon Borkh.
He documented the occurrence of 28 species of mussels in this reach including specimens of one federally listed endangered species, Epioblasma triquetra (snuffbox), one federally listed threatened species, Quadrula cylindrica (rabbitsfoot), one Ohio endangered species, Megalonaias nervosa (washboard), one Ohio threatened species, Truncilla donaciformis (fawn foot), and seven species currently listed as species of concern in the state, Anodonta suborbiculata (round floater),
militibus promissa Triquetra praedia Caesar an est Itala tellure daturus?' iurantem me scire nihil mirantur ut unum scilicet egregii mortalem altique silenti (16).
In The Health Co-Op's case, their interlocking rings on the logo also symbolize the triquetra, or another version of the Holy Trinity symbol.
A relict shell of the state endangered snuffbox (Epioblasma triquetra) was found at Spoon River site 24.