13-letter words containing t, o, r, s, i, n
- numerologists — the study of numbers, as the figures designating the year of one's birth, to determine their supposed influence on one's life, future, etc.
- nutrigenomics — the study of how individual genetic makeup interacts with diet, especially the effects of this interaction on a person's health.
- nutritionists — Plural form of nutritionist.
- o-proposition — a particular negative proposition
- observational — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- obstetricians — Plural form of obstetrician.
- obtrusiveness — having or showing a disposition to obtrude, as by imposing oneself or one's opinions on others.
- oceanic crust — the brown, hard outer portion or surface of a loaf or slice of bread (distinguished from crumb).
- octogenarians — Plural form of octogenarian.
- odontornithes — a proposed class of birds that possess teeth
- omnipresently — In an omnipresent manner.
- on its merits — on the intrinsic qualities or virtues
- on the parish — receiving parochial relief
- one's forties — the ages between 40 and 49
- oneiroscopist — a person who specialises in studying and interpreting dreams
- open registry — ship registration under a national flag available to all ships regardless of nationality.
- operativeness — (uncountable) The state or quality of being operative.
- opisthobranch — any gastropod mollusk of the order Opisthobranchia, as the sea slugs, sea butterflies, and sea hares, characterized by a vestigial or absent mantle and shell and two pairs of tentacles.
- opportunistic — adhering to a policy of opportunism; practicing opportunism.
- opportunities — Plural form of opportunity.
- oppositionary — the action of opposing, resisting, or combating.
- oral solution — An oral solution is a medicine in liquid form for drinking.
- orchestrating — Present participle of orchestrate.
- orchestration — (uncountable) the arrangement of music for performance by an orchestra.
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- organisations — Plural form of organisation.
- organizations — The action of organizing something.
- organotropism — Physiology. the attraction of microorganisms or chemical substances to particular organs or tissues of the body.
- originalities — Plural form of originality.
- ornamentalism — the desire or tendency to feature ornament in the design of buildings, interiors, furnishings, etc.
- ornamentalist — A person who ornaments.
- ornithischian — any herbivorous dinosaur of the order Ornithischia, having a pelvis resembling that of a bird. Compare saurischian.
- ornithologist — the branch of zoology that deals with birds.
- orthodontists — Plural form of orthodontist.
- orthogonalise — to make (vectors, functions, etc.) orthogonal.
- ostracisation — Alternative form of ostracization.
- ostracization — to exclude, by general consent, from society, friendship, conversation, privileges, etc.: His friends ostracized him after his father's arrest.
- outprocessing — to end a military tour of duty, accompanied by necessary paperwork: All enlisted soldiers out-process as a class.
- outstretching — Present participle of outstretch.
- over-shipment — an act or instance of shipping freight or cargo.
- over-standing — overreach (def 13).
- over-trusting — reliance on the integrity, strength, ability, surety, etc., of a person or thing; confidence.
- overassertion — assertion of something to an excessive or unnecessary degree
- overextension — to extend, reach, or expand beyond a proper, safe, or reasonable point: a company that overextended its credit to diversify.
- overhastiness — the condition of being overhasty
- overinsistent — excessively insistent
- overintensity — the state of being too intense
- oversecretion — (in a cell or gland) the act or process of separating, elaborating, and releasing a substance that fulfills some function within the organism or undergoes excretion.
- oversensitive — excessively or unduly sensitive.
- painted horse — paint (def 6).