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acreage an area or areas of land measured in acres; acres collectively. [2 definitions]
Acremonium the genus of fungi, formerly known as Cephalosporium, from which the antibiotic cephalosporin was originally isolated. Several species may cause disease in humans, esp. pneumonia.
acrid bitter in taste or smell; sharply irritating. [2 definitions]
acrimonious filled with bitterness or rancor.
acrimony bitterness or sharpness in speech or behavior.
acro- top; peak; height. [2 definitions]
acrobat a person who performs feats of balance and physical dexterity.
acrobatic having to do with acrobats or feats of balance and skill.
acrobatics the moves of an acrobat; gymnastic feats. [3 definitions]
acrogen a plant that produces no flower and grows only from the tip of the stem, such as a fern or moss.
acromegaly a chronic disease causing abnormal enlargement of the hands, feet, and parts of the face, usu. caused by a tumor of the pituitary gland.
acronym a type of abbreviation used as a word, formed by combining the initial letters (or initial parts) of words that make up a particular string. The pronunciation of an acronym is based on the typical rules of pronouncing words in a language and is not made up of the sounds of the names of individual letters.
acrophobia an overwhelming fear of high places.
acropolis a fortified hill of an ancient Greek city. [2 definitions]
across from one side or end to the other of. [7 definitions]
across the board applying equally to all parts or members.
acrostic a sequence of written lines in which particular letters, usu. the first letter of every line, form an independent word or phrase. [2 definitions]
acrylic of or characteristic of the corrosive liquid, acrylic acid. [2 definitions]
acrylic fiber any of a group of synthetic fibers that are made chiefly of acrylonitrile that has been formed into polymers.
acrylic resin any of a group of transparent synthetic resins that become pliable or set when heated and are used in acrylic fibers, plastics, and synthetic rubbers.
acrylonitrile a poisonous and carcinogenic liquid that is made into polymers for use as raw material in acrylic fibers.