13-letter words containing r, o, t, s, i
- catastrophist — the doctrine that certain vast geological changes in the earth's history were caused by catastrophes rather than gradual evolutionary processes.
- catastrophize — (obsolete) To end a comedy.
- categorisable — Alternative spelling of categorizable.
- cauterisation — Alt form cauterization.
- centuries-old — hundreds of years old
- ceremonialist — of, relating to, or characterized by ceremony; formal; ritual: a ceremonial occasion.
- chalicotheres — Plural form of chalicothere.
- chase mortise — a mortise having one inclined narrow side.
- cheiromantist — A chiromancer.
- chemisorption — an adsorption process in which an adsorbate is held on the surface of an adsorbent by chemical bonds
- chiaroscurist — A painter who uses light and shade rather than colour to create the illusion of volume.
- child support — If a parent pays child support, they legally have to pay money to help provide things such as food and clothing for a child with whom they no longer live.
- chirographist — a person who studies or who is knowledgeable about handwriting styles
- chiropractics — The practice of a chiropractor.
- chiropractors — Plural form of chiropractor.
- chloroformist — a person who is skilled in the use of or who dispenses or provides chloroform as part of their job
- chloroplastic — a plastid containing chlorophyll.
- cholesteremia — cholesterolemia.
- choripetalous — polypetalous
- chrestomathic — (of teaching or learning) That has a practical use.
- christmas box — a tip or present given at Christmas, esp to postmen, tradesmen, etc
- chromaticness — the attribute of colour that involves both hue and saturation
- chromatolysis — the dissolution of stained material, such as chromatin in injured cells
- chromesthesia — (neurology, psychology) sound-to-color synaesthesia.
- chrysophilite — a person who loves gold
- circumlocutes — Third-person singular simple present indicative form of circumlocute.
- clavichordist — Someone who plays the clavichord.
- clistocarpous — Mycology. having cleistothecia.
- cluster point — a point of a net having the property that the net is frequently in each neighborhood of the point.
- co-authorship — the state a coauthor
- coadjutorship — the state of being a coadjutor
- coal industry — a branch of commercial enterprise concerned with the discovery and mining of coal
- cobaltiferous — containing cobalt
- coconspirator — a fellow conspirator
- collateralise — Alternative spelling of collateralize.
- collectorship — The rank or office of a collector of customs or other taxes.
- colourisation — Alternative spelling of colorization.
- combinatorics — a branch of mathematics dealing with combinations and permutations
- come to grips — to engage in hand-to-hand fighting
- commercialist — the principles, practices, and spirit of commerce.
- commiserating — to feel or express sorrow or sympathy for; empathize with; pity.
- commiseration — to feel or express sorrow or sympathy for; empathize with; pity.
- commiserative — to feel or express sorrow or sympathy for; empathize with; pity.
- commissariats — Plural form of commissariat.
- communicators — Plural form of communicator.
- comorbidities — Plural form of comorbidity.
- comparativist — a comparatist
- compatriotism — a native or inhabitant of one's own country; fellow countryman or countrywoman.
- computer disk — a computer data storage device such as a hard drive or floppy disk
- computerising — Present participle of computerise.