13-letter words containing b, e, t
- number theory — the study of integers and their relation to one another.
- 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 fault — a fault that runs obliquely to, rather than parallel to or perpendicular to, the strike of the affected rocks
- 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
- 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.
- obtrusiveness — having or showing a disposition to obtrude, as by imposing oneself or one's opinions on others.
- octane number — (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.
- octosyllables — Plural form of octosyllable.
- off the books — of or relating to a book or books: the book department; a book salesman.
- off-the-books — not recorded in account books or not reported as taxable income.
- offertory box — the box or container where worshippers' put their offerings (usually money)
- on the bounce — in succession; one after the other
- on the bubble — in a situation in which the outcome is uncertain but already in the process of being determined or decided
- on the button — a small disk, knob, or the like for sewing or otherwise attaching to an article, as of clothing, serving as a fastening when passed through a buttonhole or loop.
- on the double — twice as large, heavy, strong, etc.; twofold in size, amount, number, extent, etc.: a double portion; a new house double the size of the old one.
- only-begotten — (of a child) being the only offspring of its father
- open a bottle — If you open a bottle, you remove the cork or cap.
- open brethren — one of the two main divisions of the Plymouth Brethren that, in contrast to the Exclusive Brethren, permits contacts with members outside the sect
- open-timbered — constructed so that the timbers are exposed.
- 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 fiber — optical fibre
- optical fibre — (communications) (fibre optics, FO, US "fiber", light pipe) A plastic or glass (silicon dioxide) fibre no thicker than a human hair used to transmit information using infra-red or even visible light as the carrier (usually a laser). The light beam is an electromagnetic signal with a frequency in the range of 10^14 to 10^15 Hertz. Optical fibre is less susceptible to external noise than other transmission media, and is cheaper to make than copper wire, but it is much more difficult to connect. Optical fibres are difficult to tamper with (to monitor or inject data in the middle of a connection), making them appropriate for secure communications. The light beams do not escape from the medium because the material used provides total internal reflection. See also FDDI, Optical Carrier n, SONET.
- ora et labora — pray and work
- orbital index — the ratio of the maximum breadth to the maximum height of the orbital cavity multiplied by 100.
- ostensibility — The quality of being ostensible.
- osteoblastoma — (oncology) an uncommon osteoid tissue-forming primary neoplasm of the bone.
- osteofibrosis — loss of calcium from the bones, causing them to become fragile
- out of breath — the air inhaled and exhaled in respiration.
- over-abstract — thought of apart from concrete realities, specific objects, or actual instances: an abstract idea.
- over-abundant — an excessive amount or abundance; surfeit: an overabundance of sugar in the diet.
- overambitious — having ambition; eagerly desirous of achieving or obtaining success, power, wealth, a specific goal, etc.: ambitious students.