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tectrix

[tek-triks]
noun, plural tec·tri·ces [tek-truh-seez, tek-trahy-seez] /ˈtɛk trəˌsiz, tɛkˈtraɪ siz/. Ornithology.
  1. covert(def 8).

Origin of tectrix

1760–70; < New Latin tēctrīx, equivalent to Latin teg(ere) to cover + -trīx -trix
Related formstec·tri·cial [tek-trish-uh l] /tɛkˈtrɪʃ əl/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for tectrix

tectrix

noun plural tectrices (ˈtɛktrɪˌsiːz, tɛkˈtraɪsiːz)
  1. (usually plural) ornithol another name for covert (def. 6)
Derived Formstectricial (tɛkˈtrɪʃəl), adjective

Word Origin for tectrix

C19: New Latin, from Latin tector plasterer, from tegere to cover
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012