13-letter words starting with a
- absolute unit — a unit of measurement forming part of the electromagnetic cgs system, such as an abampere or abcoulomb
- absolute veto — a vote, which cannot be overturned, to block a decision
- absolute zero — Absolute zero is a theoretical temperature that is thought to be the lowest possible temperature.
- absorbability — to suck up or drink in (a liquid); soak up: A sponge absorbs water.
- absorbed dose — the amount of energy transferred by nuclear or ionizing radiation to a unit mass of absorbing material
- absquatulated — Simple past tense and past participle of absquatulate.
- abstentionism — the policy of withholding one's vote or refusing to participate in some other aspect of the political process
- abstentionist — a person who practises or advocates abstention or abstentionism
- abstract noun — a noun that refers to an abstract concept, as for example kindness
- abstractional — relating to abstraction
- abundant year — the lunisolar calendar used by Jews, as for determining religious holidays, that is reckoned from 3761 b.c. and was established by Hillel II in the 4th century a.d., the calendar year consisting of 353 days (defective year) 354 days (regular year) or 355 days (perfect year or abundant year) and containing 12 months: Tishri, Heshvan, Kislev, Tevet, Shevat, Adar, Nisan, Iyar, Sivan, Tammuz, Av, and Elul, with the 29-day intercalary month of Adar Sheni added after Adar seven times in every 19-year cycle in order to adjust the calendar to the solar cycle. The Jewish ecclesiastical year begins with Nisan and the civil year with Tishri.
- abyssopelagic — referring to or occurring in the region of deep water above the floor of the ocean
- acacia avenue — any middle-class suburban street.
- academic dean — a high-ranking academic official who oversees all the major academic operations including curriculum, workloads, and faculty budgets
- academic gown — a loose garment like a very light coat with wide sleeves worn over a person's outer clothes and indicating academic status
- academic rank — the rank held by members of academic staff having titles such as professor, associate professor, assistant professor, instructor etc
- academic year — the period of the year during which students attend school or university
- academy award — any of the annual awards for artistic and technical achievement given by the Academy of Motion Picture Arts and Sciences
- acapulco gold — a strong and highly prized variety of marijuana grown in Mexico.
- acaridomatium — a place on a plant leaf suitable for mites to live
- acaroid resin — an alcohol-soluble gum resin taken from various grass trees, used in varnishes, etc.: unique among natural resins because it forms a hard, insoluble, chemical-resistant film when heated
- acatamathesia — the inability to understand what the senses detect, in particular conversation
- accelerations — Plural form of acceleration.
- accelerograph — an accelerometer containing a pendulum device for measuring and recording ground motions produced by earthquakes.
- accelerometer — an instrument for measuring acceleration, esp of an aircraft or rocket
- accept a card — If a hotel or restaurant accepts a card, they agree that a credit card can be used to pay the bill.
- accept a risk — If an insurance company accepts a risk, it agrees to underwrite a risk or to accept a person or company as a client.
- acceptability — capable or worthy of being accepted.
- acceptilation — the cancellation of debt and the release from payment
- acceptingness — the state or quality of being accepting
- access broker — a lobbyist or public-relations executive who was formerly a political figure or otherwise has connections to high officials in a governmental administration.
- access charge — a fee charged to long-distance telephone companies and their customers by a local telephone company for use of its lines.
- access course — An access course is an educational course which prepares adults with few or no qualifications for study at a university or other place of higher education.
- access method — a method of accessing data read from or written to an external storage medium, determined by software and the organization of data on the medium.
- accessability — Misspelling of accessibility.
- accessariness — The state of being accessary.
- accessibility — easy to approach, reach, enter, speak with, or use.
- accessible to — likely to be affected by; open to; susceptible to
- accessorizing — to fit or equip with accessories: to accessorize a car with special seat covers.
- acciaccaturas — Plural form of acciaccatura.
- accident boat — a boat kept suspended outboard so that it can be lowered immediately if someone falls overboard.
- accident tout — ambulance chaser.
- accidentalism — the state of being accidental
- accidentality — the state of being accidental
- accidentology — the study of the prevention of accidents
- acclimatation — the action of becoming used to a different climate
- acclimatement — (rare) Acclimation.
- acclimatising — Present participle of acclimatise.
- acclimatizing — Present participle of acclimatize.
- accommodating — If you describe someone as accommodating, you like the fact that they are willing to do things in order to please you or help you.