13-letter words starting with a
- accommodation — Accommodation is used to refer to buildings or rooms where people live or stay.
- accommodative — tending to accommodate; adaptive.
- accommodators — a person or thing that accommodates.
- accompaniment — The accompaniment to a song or tune is the music that is played at the same time as it and forms a background to it.
- accomplishing — Present participle of accomplish.
- accouchements — Plural form of accouchement.
- accouterments — personal clothing, accessories, etc.
- accoutrements — all the things you have with you when you travel or take part in a particular activity, such as clothing and equipment
- accreditation — to ascribe or attribute to (usually followed by with): He was accredited with having said it.
- accroides gum — acaroid resin.
- accrual basis — An accrual basis is a system of accounting where income is recognized before payment is received and expenses are recognized before they are paid.
- acculturating — Present participle of acculturate.
- acculturation — the process of conditioning a child to the patterns or customs of a culture
- acculturative — relating to or resulting in acculturation
- accumulations — Plural form of accumulation.
- accustomed to — customary; usual; habitual: in their accustomed manner.
- ace inhibitor — any one of a class of drugs, including captopril, enalapril, and ramipril, that cause the arteries to widen by preventing the synthesis of angiotensin: used to treat high blood pressure and heart failure
- ace of spades — playing card, sometimes considered omen of death
- acetabuliform — saucer-shaped, as the fruiting bodies of certain lichens.
- acetaminophen — a white crystalline powder, CH3CONHC6H4OH, used for reducing fever and relieving pain
- acetanisidine — methacetin.
- acetate rayon — a synthetic textile fibre made from cellulose acetate
- acetate-rayon — Chemistry. a salt or ester of acetic acid.
- acetazolamide — a drug which operates by blocking the production of hydrogen ions and hydrogen carbonate, used to treat various conditions including epilepsy and glaucoma
- acetohexamide — (pharmaceutical drug) A sulfonylurea antidiabetic drug.
- acetylaniline — acetanilide.
- acetylbenzene — acetophenone.
- acetylcholine — a chemical substance secreted at the ends of many nerve fibres, esp in the autonomic nervous system, and responsible for the transmission of nervous impulses. Formula: CH3CO2(CH2)2N(CH3)3+
- achievability — The state or condition of being achievable.
- achill island — an island in the Republic of Ireland, off the W coast of Co Mayo. Area: 148 sq km (57 sq miles). Pop: 2620 (2002)
- achilles heel — Someone's Achilles heel is the weakest point in their character or nature, where it is easiest for other people to attack or criticize them.
- achilles jerk — a downward reflex action of the foot when the Achilles tendon is tapped, caused by contraction of the calf muscles.
- achromaticity — achromatism.
- achromatophil — Also, achromatophilic [ey-kruh-mat-uh-fil-ik, ak-ruh-, ey-kroh-muh-tuh-] /ˌeɪ krəˌmæt əˈfɪl ɪk, ˌæk rə-, eɪˌkroʊ mə tə-/ (Show IPA). having little or no affinity for stains.
- achromatopsia — a visual disorder defined by deficient or absent function in the retinal cones, resulting in colour blindness and in decreased vision in bright lights
- achromobacter — any of several rod-shaped bacteria of the genus Achromobacter, found in soil and water.
- acidification — The act or process of making something sour (acidifying), or changing into an acid.
- acidulousness — A state of or tendency toward being acidulous or somewhat sour or acid.
- acinetobacter — a bacterium that causes infections such as pneumonia, particularly in people who have a compromised immune system
- acknowledging — Present participle of acknowledg.
- acne vulgaris — an inflammatory disease of the sebaceous glands, characterized by comedones and pimples, especially on the face, back, and chest, and, in severe cases, by cysts and nodules resulting in scarring.
- acne-vulgaris — an inflammatory disease of the sebaceous glands, characterized by comedones and pimples, especially on the face, back, and chest, and, in severe cases, by cysts and nodules resulting in scarring.
- acotyledonous — Having no seed lobes, as the dodder; also applied to plants which have no true seeds, as ferns, mosses, etc.
- acoustic hood — a type of shield that fits around electronic and other equipment, which reduces the noise generated when that equipment is being used
- acoustic mine — a naval mine designed to be exploded by the vibration of the propeller of a passing ship or by the sound of water along the hull.
- acoustooptics — the branch of physics dealing with the relationships between acoustics and light
- acquaintanced — Acquainted.
- acquaintances — Plural form of acquaintance.
- acquiescently — disposed to acquiesce or consent tacitly.
- acquirability — the attribute of being acquirable