13-letter words starting with o
- o-proposition — a particular negative proposition
- oak wax scale — any of various small oval-shaped homopterous insects of the family Asterolecaniidae, the female members of which have their bodies embedded in a waxy mass, as in the destructive Cerococcus quercus ((oak wax scale) or (oak scale)) or covered with a waxy film.
- oak-apple day — (in Britain) May 29, the anniversary of the Restoration (1660), formerly commemorated by the wearing of oak apples or oak leaves, recalling the Boscobel oak in which Charles II hid after the battle of Worcester
- obi-wan error — (programming) /oh'bee-won" er"*r/ (RPI, from "off-by-one" and the Obi-Wan Kenobi character in "Star Wars") A kind of off-by-one error.
- obiter dictum — an incidental or passing remark, opinion, etc.
- object clause — the clause that acts as the object of a verb
- object lesson — a practical or concrete illustration of a principle.
- object method — (programming) In object-oriented programming, a function that is called, or "invoked", on an object, as opposed to a class method which is invoked on a class. For example, a class "Person" might have an object method to return a person's name and a class method to return the number of people. An object method called on an object of class C may be defined by C or may be inherited from one of C's superclasses.
- object oberon — Oberon plus classes and methods by H. Moessenboeck & J. Templ, 1989. See Oberon-2.
- object pascal — (language) An object-oriented Pascal developed jointly by Apple Computer and Niklaus Wirth.
- objectionable — causing or tending to cause an objection, disapproval, or protest.
- objectionably — causing or tending to cause an objection, disapproval, or protest.
- objectiveness — something that one's efforts or actions are intended to attain or accomplish; purpose; goal; target: the objective of a military attack; the objective of a fund-raising drive.
- objectivistic — Of or pertaining to objectivism.
- objectivities — Plural form of objectivity.
- objurgatively — In an objurgative or reproving manner.
- oblique angle — an angle that is not a right angle; an acute or obtuse angle.
- oblique fault — a fault that runs obliquely to, rather than parallel to or perpendicular to, the strike of the affected rocks
- obliviousness — unmindful; unconscious; unaware (usually followed by of or to): She was oblivious of his admiration.
- obnoxiousness — highly objectionable or offensive; odious: obnoxious behavior.
- observability — capable of being or liable to be observed; noticeable; visible; discernible: an observable change in attitude.
- observational — of, relating to, or founded on observation, especially founded on observation rather than experiment.
- observatories — Plural form of observatory.
- observer team — a team deployed to an area of conflict to observe proceedings
- obsessionally — In an obsessional manner.
- obsessiveness — being, pertaining to, or resembling an obsession: an obsessive fear of illness.
- obsolescently — In an obsolescent manner.
- obstacle race — a foot race in which the contestants are prevented in a specific way from covering the full course at top speed, as by having hurdles to jump, sacks enclosing the legs, or potatoes to pick up.
- obstetrically — (medicine) In terms of obstetrics.
- obstetricians — Plural form of obstetrician.
- obstinateness — The characteristic of being obstinate.
- obstructively — In an obstructive manner.
- obtainability — to come into possession of; get, acquire, or procure, as through an effort or by a request: to obtain permission; to obtain a better income.
- obtrusiveness — having or showing a disposition to obtrude, as by imposing oneself or one's opinions on others.
- occam's razor — the maxim that assumptions introduced to explain a thing must not be multiplied beyond necessity.
- occasionalism — a theory that there is no natural interaction between mind and matter, but that God makes mental events correspond to physical perceptions and actions.
- 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
- occassionally — Misspelling of occasionally.
- occidentalism — Occidental character or characteristics.
- occidentalize — to make Occidental.
- ocean springs — a town in SE Mississippi.
- ocean sunfish — a brown and gray mola, Mola mola, inhabiting tropical and temperate seas, having the posterior half of the body sharply truncated behind the elongated dorsal and anal fins.
- oceanic crust — the brown, hard outer portion or surface of a loaf or slice of bread (distinguished from crumb).
- oceanic ridge — any section of the narrow, largely continuous range of submarine mountains that extends into all the major oceans and at which new oceanic lithosphere is created by the rise of magma from the earth's interior
- oceanographer — the branch of physical geography dealing with the ocean.
- oceanographic — the branch of physical geography dealing with the ocean.
- oceanological — relating to the science and analysis of the ocean
- ochlocratical — Pertaining to ochlocracy.
- octagon house — a type of American house, c. 1850, having an octagonal perimeter to reduce exterior wall area.
On this page, we collect all 13-letter words starting with letter O. It’s easy to find right word with a certain length. It is the easiest way to find 13-letter word that beginning with O to use in Scrabble or Crossword puzzles.