21-letter words containing x, e
- relaxation oscillator — a nonsinusoidal oscillator, the timing of which is controlled by the charge and discharge time constants of resistance and capacitance components
- repatriation expenses — Repatriation expenses are the costs involved in transporting a claimant or their body back to their own country after they have been injured or killed in a foreign country.
- reverse polish syntax — postfix notation
- schoolgirl complexion — a smooth, clear complexion, such as schoolgirls are considered to have
- sir william alexander — Sir William (Alexander) 1867–1957, Scottish lexicographer and philologist.
- skew symmetric matrix — a matrix that is equal to the negation of its transpose
- the executive mansion — the White House
- think outside the box — to think in a different, innovative, or original manner, esp with regard to business practices, products, systems, etc
- to be mixed up in sth — if you are mixed up in something, usually something bad, you are involved in it
- to box someone's ears — If someone boxes a child's ears, they hit them on the side of their head as a punishment.
- to mix your metaphors — If you mix your metaphors, you use two conflicting metaphors. People do this accidentally, or sometimes deliberately as a joke.
- wholesale price index — an indicator of price changes in the wholesale market
- with the exception of — except for, save
- xeroderma pigmentosum — a rare inherited disease characterized by sensitivity to ultraviolet light, exposure resulting in lesions and tumors of the skin and eyes.
- xfree86 project, inc. — (operating system, graphics) A non-profit organisation that produces XFree86, a freely redistributable implementation of the X Window System that runs on Unix and Unix-like operating systems and OS/2. The XFree86 Project has traditionally focused on Intel x86 based platforms (hence the "86"), but the current release supports other platforms.
- xilinx netlist format — (language, electronics) (XNF) A Hardware Description Language for electronic circuit design, developed by Xilinx, Inc..
- yellow mercuric oxide — a slightly crystalline, water-soluble, poisonous compound, HgO, occurring as a coarse, orange-red powder (red mercuric oxide) or as a fine, orange-yellow powder (yellow mercuric oxide) used chiefly as a pigment in paints and as an antiseptic in pharmaceuticals.