13-letter words containing a, c, t, i, n
- occasionalist — a person who subscribes to the theory of occasionalism
- occasionality — the condition or character of being infrequent or intended for a specific occasion, or that which is infrequent or intended for a specific occasion
- occidentalism — Occidental character or characteristics.
- occidentalize — to make Occidental.
- oceanic crust — the brown, hard outer portion or surface of a loaf or slice of bread (distinguished from crumb).
- octane-rating — (of gasoline) a designation of antiknock quality, numerically equal to the percentage of isooctane by volume in a mixture of isooctane and normal heptane that matches the given gasoline in antiknock characteristics.
- octanoic acid — caprylic acid.
- octogenarians — Plural form of octogenarian.
- odontoblastic — Relating to odontoblasts.
- off the chain — wildly entertaining
- onanistically — In an onanistic manner.
- onomastically — In an onomastic way.
- onomatopoetic — the formation of a word, as cuckoo, meow, honk, or boom, by imitation of a sound made by or associated with its referent.
- ontologically — In an ontological manner.
- onychophagist — the practice of biting one's nails, especially when done habitually and as a symptom of emotional disturbance.
- opacification — to cause to become opaque.
- 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.
- oprahfication — the perceived increase in people’s desire to discuss their emotions or personal problems, attributed to the influence of confessional television programmes
- optical bench — an apparatus, as a special table or rigid beam, for the precise positioning of light sources, screens, and optical instruments used for optical and photometric studies, having a ruled bar to which these devices can be attached and along which they can be readily adjusted.
- optical crown — an optical glass of low dispersion and relatively low refractive index. It is used in the construction of lenses
- optical flint — an optical glass of high dispersion and high refractive index containing lead oxide. They are used in the manufacture of lenses, artificial gems, and cut glass
- optical sound — sound recorded on and subsequently played back from an optical or photographic soundtrack, as opposed to a magnetic soundtrack.
- orchestrating — Present participle of orchestrate.
- orchestration — (uncountable) the arrangement of music for performance by an orchestra.
- organogenetic — Relating to organogenesis.
- ornithischian — any herbivorous dinosaur of the order Ornithischia, having a pelvis resembling that of a bird. Compare saurischian.
- ornithomantic — relating to ornithomancy
- oscillational — characterized by oscillation
- ossifications — Plural form of ossification.
- 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.
- out of action — If someone or something is out of action, they are injured or damaged and cannot work or be used.
- outdistancing — Present participle of outdistance.
- outrecuidance — (archaic) Presumption, arrogance, self-conceit.
- over-analytic — pertaining to or proceeding by analysis (opposed to synthetic).
- overeducation — the act or process of imparting or acquiring general knowledge, developing the powers of reasoning and judgment, and generally of preparing oneself or others intellectually for mature life.
- packing crate — A packing crate is a large wooden box in which things are put so that they can be stored or taken somewhere.
- packing plant — an establishment for processing and packing foods, especially meat, to be sold at wholesale.
- paediatrician — A paediatrician is a doctor who specializes in treating sick children.
- paleomagnetic — Geology. magnetic polarization acquired by the minerals in a rock at the time the rock was deposited or solidified.
- palmification — the fertilization of date palms artificially
- pandiculation — the act of stretching oneself.
- pantisocratic — relating to pantisocracy
- para-centesis — puncture of the wall of a cavity to drain off fluid.
- parasynthetic — the formation of a word by the addition of a derivational suffix to a phrase or compound, as of greathearted, which is great heart plus -ed.
- parenthetical — of, pertaining to, noting, or of the nature of a parenthesis: several unnecessary parenthetic remarks.
- participantly — in a participant manner
- participating — to take or have a part or share, as with others; partake; share (usually followed by in): to participate in profits; to participate in a play.
- participation — an act or instance of participating.
- party machine — the internal organization of a political party, which decides its policies and directs its activities