What is the X in X-mas?
early 15c., "network, structure," from Middle French texture, from Latin textura "web, texture, structure," from stem of texere "to weave," from PIE root *tek- "to weave, to fabricate, to make; make wicker or wattle framework" (cf. Sanskrit taksati "he fashions, constructs," taksan "carpenter;" Avestan taša "ax, hatchet," thwaxš- "be busy;" Old Persian taxš- "be active;" Greek tekton "carpenter," tekhne "art;" Old Church Slavonic tesla "ax, hatchet;" Lithuanian tasau "to carve;" Old Irish tal "cooper's ax;" Old High German dahs, German Dachs "badger," literally "builder;" Hittite taksh- "to join, unite, build"). Meaning "structural character" is recorded from 1650s.
texture tex·ture (těks'chər)
The composition or structure of a tissue or organ.
The general physical appearance of a rock, especially with respect to the size, shape, size variability, and geometric arrangement of its mineral crystals (for igneous and metamorphic rocks) and of its constituent elements (for sedimentary rocks). A sandstone that forms as part of an eolian (wind-blown) deposit, for example, has a texture that reflects its small, rounded sand grains of uniform size, while a sandstone that formed as part of a fluvial deposit has a texture reflecting the presence of grains of varying sizes, with some more rounded than others.