W W chemical symbol, tungsten (wolfram); tryptophan; watt. W/ with. Used in medical records. W-plasty a technique in tension-relieving plastic surgery used mostly for the excision of unsightly scars. The…
Q Q abbreviation for ubiquinone (CoQ). Q cycle cycle in which electrons are transferred from QH2 to cytochrome c and protons are transported into the mitochondrial intermembrane space via complex…
Z Z symbol for zetta. Z zeta, capital letter; sixth letter in the Greek alphabet; symbol for atomic number. ζ zeta, small letter; sixth letter in the Greek alphabet. Z…
X X symbol, Kienböck’s unit (of X-ray exposure). xi, small letter; fourteenth letter in the Greek alphabet. X-deletion X ovarian dysgenesis a chromosomal defect identified in mares; causes failure of…
Y Y chemical symbol, yttrium.; symbol for yotta. Y-autosome chromosomal aberration created artificially by irradiation in the process of producing sterile flies by the sterile insect release method. Y chromosome…
