Etymology
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tefillin (n.)
1610s, from Rabbinical Hebrew t'phillim, plural of t'phillah "prayer."
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Teflon (n.)
commercially important synthetic polymer, 1945, proprietary name registered in U.S. by du Pont, from chemical name (poly)te(tra)fl(uoroethylene) + arbitrary ending -on; popularized as a coating of non-stick pans in 1960s; metaphoric extension, especially in reference to U.S. President Ronald Reagan, is attested from an Aug. 2, 1983, speech on the floor of Congress by Pat Schroeder.
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teg (n.)
sheep in its second year, 1520s, of uncertain origin, perhaps from a Scandinavian source (compare Swedish tacka "ewe").
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tegular (adj.)
"of or like a tile," 1796, from Latin tegula "tile" (see tile (n.)) + -ar. Related: Tegulated.
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tegument (n.)
"a covering, a natural protection of the body or some part of it," mid-15c., from Latin tegumentum "a covering, a cover," from tegere "to cover," from PIE root *(s)teg- "to cover." Related: Tegumentary.
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Tehran 
also Teheran, Iranian capital, said to mean "flat, level, lower," but sometimes derived from Old Persian teh "warm" + ran "place."
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Tejano 
"native or inhabitant of Texas," 1925, from American Spanish, formerly Texano "a Texan" (see Texas).
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*teks- 

Proto-Indo-European root meaning "to weave," also "to fabricate," especially with an ax," also "to make wicker or wattle fabric for (mud-covered) house walls."

It forms all or part of: architect; context; dachshund; polytechnic; pretext; subtle; technical; techno-; technology; tectonic; tete; text; textile; tiller (n.1) ""bar to turn the rudder of a boat;" tissue; toil (n.2) "net, snare."

It is the hypothetical source of/evidence for its existence is provided by: *teks- "to weave, to fabricate, to make; make wicker or wattle framework" (source also of Sanskrit taksati "he fashions, constructs," taksan "carpenter;" Avestan taša "ax, hatchet," thwaxš- "be busy;" Old Persian taxš- "be active;" Latin texere "to weave, fabricate," tela "web, net, warp of a fabric;" Greek tekton "carpenter," tekhnē "art;" Old Church Slavonic tesla "ax, hatchet;" Lithuanian tašau, tašyti "to carve;" Old Irish tal "cooper's ax;" Old High German dahs, German Dachs "badger," literally "builder;" Hittite taksh- "to join, unite, build."

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tektite (n.)
small roundish glass bodies, probably of meteoric origin, 1909, from German tektit (Suess, 1900), from Greek tektos "molten," from tekein "to melt."
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Telamon 
in Greek mythology, father of Ajax, brother of Peleus, literally "the Bearer," from Greek telamon "broad strap for bearing something."
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