13-letter words containing a, r, s, l, o
- buffalo grass — a short grass, Buchloë dactyloides, growing on the dry plains of the central US
- burglariously — in the manner of a burglar or buglary
- buster collar — a round collar, similar to a lampshade in shape, that is fitted round the neck of an animal or bird, for example to prevent it removing or interfering with a dressing or other treatment
- calcariferous — having a spur or spurs
- calvary cross — a Latin cross with a representation of three steps beneath it
- candleholders — Plural form of candleholder.
- car boot sale — A car boot sale is a sale where people sell things they own and do not want from a little stall or from the back of their car.
- carbolic soap — a disinfectant soap containing phenol
- carcinologist — a person who specializes in carcinology
- cardiologists — Plural form of cardiologist.
- carillonneurs — Plural form of carillonneur.
- carnivorously — In a carnivorous manner.
- carol service — a service, held in a church around Christmas, at which Christmas carols are sung
- cartilaginous — of or like cartilage; gristly
- cartiliginous — Alternative form of cartilaginous.
- castle howard — a mansion near York in Yorkshire: designed in 1700 by Sir John Vanbrugh and Nicholas Hawksmoor; the grounds include the Temple of the Four Winds and a mausoleum
- castro valley — a town in W California, near San Francisco Bay.
- casual labour — people who are employed on a temporary, rather than a permanent or regular basis
- casual worker — a person who has temporary, as opposed to permanent or regular, employment
- catalog verse — verse made by compiling long lists of everyday objects, names, or events, united by a common theme and often didactic in tone.
- categorisable — Alternative spelling of categorizable.
- cavernicolous — inhabiting caves or cavelike places
- centrosomally — In a centrosomal way.
- cephalosporin — any of a group of broad-spectrum antibiotics obtained from fungi of the genus Cephalosporium
- cerebrospinal — of or relating to the brain and spinal cord
- ceremonialism — A fondness for ceremony, especially in religion; ritualism.
- ceremonialist — of, relating to, or characterized by ceremony; formal; ritual: a ceremonial occasion.
- ceruloplasmin — a protein responsible for copper detoxification, found in the blood
- chalicotheres — Plural form of chalicothere.
- charles abbot — Charles Greeley, 1872–1973, U.S. astrophysicist.
- charles louis — (Karl Ludwig Johann) 1771–1847, archduke of Austria.
- charley horse — People sometimes refer to a cramp in the muscles of their leg or arm as a charley horse.
- charlier shoe — special light horseshoe
- charnel house — A charnel house is a place where the bodies and bones of dead people are stored.
- chemosurgical — of or relating to chemosurgery
- chlamydospore — a thick-walled asexual spore of many fungi: capable of surviving adverse conditions
- chloroplastal — of or like a chloroplast
- chloroplastic — a plastid containing chlorophyll.
- chlorous acid — an unstable acid that is a strong oxidizing agent. Formula: HClO2
- cholesteremia — cholesterolemia.
- chorepiscopal — (in early Christianity) relating to or connected with a local bishop
- choripetalous — polypetalous
- chromatolysis — the dissolution of stained material, such as chromatin in injured cells
- chromosomally — With reference to chromosomes.
- clair-obscure — chiaroscuro.
- clamorousness — The state or quality of being clamorous.
- clapperboards — Plural form of clapperboard.
- clare-obscure — chiaroscuro.
- claustrophobe — a person who suffers from claustrophobia.
- clavichordist — Someone who plays the clavichord.