10-letter words containing x, r, a
- peroxidase — any of a class of oxidoreductase enzymes that catalyze the oxidation of a compound by the decomposition of hydrogen peroxide or an organic peroxide.
- peroxyacid — an acid derived from hydrogen peroxide and containing the –O–O– group, as peroxysulfuric acid, H 2 S 2 O 8 .
- phylloxera — any of several plant lice of the genus Phylloxera, especially P. vitifoliae (grape phylloxera) which attacks the leaves and roots of grapevines.
- pillar box — a pillarlike box in which letters are deposited for collection by mail carriers; mailbox.
- pluriaxial — having several axes; specif., having flowers on secondary shoots
- polar axis — the fixed line, usually horizontal, from which the angle made by the radius vector is measured in a polar coordinate system.
- prattlebox — a person who prattles, a chatterbox
- praxeology — the study of human conduct.
- praxiteles — flourished c350 b.c, Greek sculptor.
- pre-climax — a stable community that precedes the full development of the climax community of a given area and that results from local variations in soil and water.
- preexilian — being or occurring prior to the exile of the Jews in Babylonia 597–538 b.c.
- prelexical — denoting or applicable at a stage in the formation of a sentence at which words and phrases have not yet replaced all of the underlying grammatical and semantic material of that sentence in the speaker's mind
- premaxilla — one of a pair of bones of the upper jaw of vertebrates, situated in front of and between the maxillary bones.
- proximally — situated toward the point of origin or attachment, as of a limb or bone. Compare distal (def 1).
- quadratrix — a curve by which a curved figure, such as a circle, may be squared
- quadriplex — A building divided into four self-contained residences.
- quadroxide — (chemistry) A tetroxide.
- quadruplex — fourfold; quadruple.
- radio taxi — a taxi in two-way radio communication with a dispatcher, who sends it directly to persons who phone in for a taxi.
- radiotoxic — causing radiation sickness.
- re-examine — to examine again.
- re-explain — to explain again or in a different way
- reflex arc — the nerve pathways followed by an impulse during a reflex.
- reflex-act — Physiology. noting or pertaining to an involuntary response to a stimulus, the nerve impulse from a receptor being transmitted inward to a nerve center that in turn transmits it outward to an effector.
- relaxation — abatement or relief from bodily or mental work, effort, application, etc.
- relaxative — a medication or activity that promotes relaxation
- rix-dollar — any of various silver coins, as the Danish rigsdaler, the Dutch rijksdaalder, or the German reichsthaler, of about equal value.
- rock hyrax — an African and Middle Eastern hyrax of the genus Procavia that lives in rocky places.
- screw axis — a symmetry element of a space group such that a rotation of the lattice about the axis and a translation of the lattice some fraction of the lattice's unit distance brings the lattice back to its original position.
- separatrix — something that divides or separates, as the line between light and dark areas on a partially illuminated surface.
- sex factor — a sex-determining chromosome or gene.
- sex-crazed — unhealthily obsessed with sexual activity
- sexagenary — of or relating to the number 60.
- sexlocular — having six loculi or cells for seeds
- sexpartite — divided into or consisting of six parts.
- six-seater — a vehicle vehicle providing seats for six people
- sixth year — (in Scotland) the most senior class in a secondary school to which pupils, usually above the legal leaving age, may proceed to take sixth-year studies, retake or take additional Highers, etc
- solar apex — the point on the celestial sphere, near Vega, toward which the solar system is moving relative to the visible stars.
- spectatrix — a female spectator
- stereotaxy — brain surgery that makes use of measurement in three dimensions for positioning an electrode, needle, etc. precisely
- superexalt — to exalt further; to exalt or raise above others or above a previous position
- synaxarion — a summary of the life of a saint or of the particulars of a feast, read at the orthros.
- synaxarium — synaxarion.
- tax burden — the amount of tax paid by a person, company, or country in a specified period considered as a proportion of total income in that period.
- tax credit — reduction in tax owed
- tax evader — a person who reduces or minimizes their tax liability by illegal methods
- tax rebate — repayment of money paid as tax
- tax refund — rebate on overpaid tax
- tax relief — finance: reduction
- tax return — return (def 24).