13-letter words containing s, r, c, o
- heterostracan — any of several ostracoderms of the order Heterostraci, from the Silurian and Devonian Periods, having the anterior part of the body enclosed in bony plates.
- hickory hills — a town in NE Illinois.
- hieracosphinx — (in ancient Egyptian art) a hawk-headed sphinx
- hieroglyphics — Also, hieroglyphical. designating or pertaining to a pictographic script, particularly that of the ancient Egyptians, in which many of the symbols are conventionalized, recognizable pictures of the things represented.
- historicizing — Present participle of historicize.
- histrionicism — histrionic behaviour or acts
- holosericeous — covered with short, silky hairs.
- home comforts — things in a house that make it comfortable
- home-schooler — to teach (one's children) at home instead of sending them to school.
- homeschoolers — Plural form of homeschooler.
- homoeroticism — a tendency to be sexually aroused by a member of the same sex.
- honeycreepers — Plural form of honeycreeper.
- honor society — (in a college, university, or secondary school) a student society that admits members on the basis of academic merit and, sometimes, worthwhile contributions in extracurricular activities.
- honoris causa — for the sake of honour
- honors course — a course in a university or college consisting largely of independent research terminating in a dissertation or a comprehensive examination, and earning for the student who passes it a degree with distinction.
- honour school — (at Oxford University) one of the courses of study leading to an honours degree
- horned scully — a tapered block of concrete with projecting steel rails, placed under water to tear holes in the bottoms of boats.
- horror-struck — stricken with horror; horrified; aghast.
- hors concours — noting an artist, architect, or the like, not competing or not qualified to compete for the prizes in an exhibit or competition.
- hortus siccus — a collection of dried plants; herbarium.
- hospital care — medical treatment provided in a hospital
- host computer — the main computer in a network: controls or performs certain functions for other computers.
- hot cross bun — a bun with a cross of frosting on it, eaten chiefly during Lent.
- house cricket — a dark brown cricket, Acheta domesticus, having a light-colored head with dark crossbands, commonly occurring throughout North America and Europe, where it may be an indoor pest.
- house officer — a doctor who is the most junior member of the medical staff of a hospital, usually resident in the hospital
- how's tricks? — how are you?
- hydroaerobics — aerobic exercises performed in water, as in a swimming pool.
- hydrocephalus — an accumulation of serous fluid within the cranium, especially in infancy, due to obstruction of the movement of cerebrospinal fluid, often causing great enlargement of the head; water on the brain.
- hydrocolloids — Plural form of hydrocolloid.
- hydrodynamics — the branch of fluid dynamics that deals with liquids, including hydrostatics and hydrokinetics.
- hydrokinetics — the branch of hydrodynamics that deals with the laws governing liquids or gases in motion.
- hydrostatical — Alternative form of hydrostatic.
- hydrosulfuric — (chemistry) Derived from hydrogen sulfide considered as hydrosulfuric acid.
- hypercautious — Especially or unreasonably cautious.
- hypersarcosis — a fleshy outgrowth
- hypochlorites — Plural form of hypochlorite.
- hyposecretion — a diminished secretion.
- hyposulphuric — relating to sulphur which is in a lower state of oxidation than it is in sulphuric compounds
- hypsometrical — Of or pertaining to hypsometry.
- hystricomorph — any rodent of the suborder Hystricomorpha, which includes porcupines, cavies, agoutis, and chinchillas
- ichthyosaurus — ichthyosaur.
- iconographies — Plural form of iconography.
- ides of march — 15th March: ominous date
- idiosyncratic — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
- imperfections — A fault, blemish, or undesirable feature.
- in due course — a direction or route taken or to be taken.
- in respect of — with regard, with reference
- in respect to — with regard to
- in retrospect — contemplation of the past; a survey of past time, events, etc.
- in-observance — lack of attention; inattention; heedlessness: drowsy inobservance.