8-letter words containing o, s, t, i, a
- atchison — a city in NE Kansas, on the Missouri River.
- atkinson — Sir Harry Albert. 1831–92, New Zealand statesman, born in England: prime minister of New Zealand (1876–77; 1883–84; 1887–91)
- atomised — to reduce to atoms.
- atomiser — Modern commonwealth spelling of 'atomizer'.
- atomises — Third-person singular simple present indicative form of atomise.
- atomizes — Third-person singular simple present indicative form of atomize.
- atosiban — (medicine) A medication, that inhibits oxytocin and vasopressin, used to halt premature labour.
- atropism — a condition caused by using atropine over a period of time
- auctions — Plural form of auction.
- auditors — Plural form of auditor.
- autolisp — (language) A dialect of Lisp used by the Autocad CAD package from Autodesk.
- autopsic — relating to autopsy
- aviators — Plural form of aviator.
- bailouts — Plural form of bailout.
- banjoist — a musical instrument of the guitar family, having a circular body covered in front with tightly stretched parchment and played with the fingers or a plectrum.
- bastions — Plural form of bastion.
- baziotes — William, 1912–63, U.S. painter.
- bioplast — a very small unit of bioplasm
- blastoid — a type of extinct echinoderm, which can be found in fossil form in regions of North America
- boasting — to speak with exaggeration and excessive pride, especially about oneself.
- boatslip — a docking place for a boat, as between wharves.
- bonavist — hyacinth bean.
- bostangi — a Turkish imperial guard
- botanist — A botanist is a scientist who studies plants.
- callisto — a nymph who attracted the love of Zeus and was changed into a bear by Hera. Zeus then set her in the sky as the constellation Ursa Major
- calorist — a believer in caloric theory
- canoeist — A canoeist is someone who is skilled at racing and performing tests of skill in a canoe.
- canonist — a specialist in canon law
- cantoris — (in antiphonal music) to be sung by the cantorial side of a choir
- capitols — Plural form of capitol.
- captions — Plural form of caption.
- captious — apt to make trivial criticisms; fault-finding; carping
- carotids — Plural form of carotid.
- castilho — Antonio Feliciano de [ahn-taw-n-yoo fuh-lees-yah-noo] /ɑ̃ˈtɔˈn yu fə lisˈyɑ nu/ (Show IPA), 1800–75, Portuguese poet.
- castillo — Antonio [ahn-taw-nyaw] /ɑnˈtɔ nyɔ/ (Show IPA), (Antonio Cánovas del Castillo del Rey) 1908–1984, Spanish fashion designer.
- castiron — Alternative spelling of cast iron.
- castizos — Plural form of castizo.
- cautions — alertness and prudence in a hazardous situation; care; wariness: Landslides ahead—proceed with caution.
- cautious — Someone who is cautious acts very carefully in order to avoid possible danger.
- chaotics — (literature) A recent branch of literary and cultural studies based on chaos theory and the inherent structure of apparently chaotic systems.
- chariots — Plural form of chariot.
- chitosan — a polysaccharide produced from chitin
- coassist — to assist jointly
- coasting — the land next to the sea; seashore: the rocky coast of Maine.
- coatings — Plural form of coating.
- cohabits — Third-person singular simple present indicative form of cohabit.
- contains — Third-person singular simple present indicative form of contain.
- custodia — (rare) pyx (container for the host).
- diastole — the dilatation of the chambers of the heart that follows each contraction, during which they refill with blood
- dilators — Plural form of dilator.