X U = 2 (A coin formerly minted by South Vietnam equivalent to the cent)
X I S = 3 (plural of "xi", the 14th letter of the Greek alphabet)
X-R A Y = 4 (no definition necessary)
X E R O X = 5 (manufacturer of thermal copiers)
![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)
X A N A D U = 6 (RIP, Olivia)
X A N T H A N = 7 (from xanthan gum)
X Y L O T O M Y = 8 (The microscopic structure of the wood of a plant)
X Y L O P H O N E = 9
X E N O T R O P I C = 10 (Of some viruses, capable of growing in a species that differs from their normal host.)
X A N T H O P H Y L L = 11 (crystals found in marigold petals
![Smile :)](./images/smilies/icon_smile.gif)
X Y L O G R A P H E R S = 12 (those who engrave in wood)
X E R O P H T H A L M I A = 13 (eyeball dryness)
X E N O P H O P I C A L L Y = 14 (in a way that shows or expresses an extreme dislike or fear of people from foreign countries)
X E R O R A D I O G R A P H Y = 15 (some sort of X-ray)