12-letter words containing r, i
- achlorhydric — relating to a lack of gastric hydrochloric acid
- achromatopia — Defective ability to see colours.
- acid radical — the remainder of an acid molecule after acidic hydrogen has been removed.
- acid-forming — (of an oxide or element) yielding an acid when dissolved in water or having an oxide that forms an acid in water; acidic
- acoustimeter — a portable electronic device for measuring noise levels, especially those of traffic.
- acquirements — Plural form of acquirement.
- acrocyanosis — cyanosis of the hands and feet due to poor circulation of the blood
- acrophonetic — relating to the use of symbols to represent sounds
- acrostically — In the manner of an acrostic.
- acrylic acid — a colourless corrosive pungent liquid, miscible with water, used in the manufacture of acrylic resins. Formula: CH2:CHCOOH
- actinic rays — light rays, esp. the violet and ultraviolet parts of the spectrum, that produce chemical changes, as in photography
- actinometers — Plural form of actinometer.
- actinometric — Of or pertaining to actinometry.
- actinomorphy — The condition of being actinomorphic.
- action grant — funds awarded by the federal government on a competitive basis to cities that submit plans for urban development and are able to show that such plans have the cooperation and endorsement of private investors.
- action group — a group of people who come together to fight for a particular cause or to carry out a particular task
- active layer — (in arctic or subarctic regions) the layer of soil, above the permafrost, that thaws during the summer.
- ad arbitrium — at pleasure; at will.
- adapter ring — a type of circular mount used for attaching a filter or some other piece of equipment to a camera lens
- addlebrained — having an addle brain; muddled; stupid
- adenoviruses — Plural form of adenovirus.
- adiaphoresis — absence or reduction of perspiration.
- adiaphoretic — preventing or reducing perspiration.
- adiponitrile — a colorless liquid, C 6 H 8 N 2 , used chiefly as an intermediate in the manufacture of nylon.
- adjudicators — Plural form of adjudicator.
- adjudicatory — relating to adjudication
- adjudicature — An act of adjudication; a judgment.
- adminiculary — Adminicular.
- administered — Simple past tense and past participle of administer.
- administrant — a person who administers
- administrate — to manage or direct (the affairs of a business, institution, etc)
- admirability — the quality of being admirable
- admonitorily — in an admonitory manner
- adolf hitler — Adolf [ad-olf,, ey-dolf;; German ah-dawlf] /ˈæd ɒlf,, ˈeɪ dɒlf;; German ˈɑ dɔlf/ (Show IPA), (Adolf Schicklgruber"der Führer") 1889–1945, Nazi dictator of Germany, born in Austria: Chancellor 1933–45; dictator 1934–45.
- adrenalizing — to stir to action; excite: The promise of victory adrenalized the team.
- adrian quist — intoxicated; drunk
- adrianopolis — Edirne
- adriatic sea — an arm of the Mediterranean between Italy and the Balkan Peninsula
- adulterating — Present participle of adulterate.
- adulteration — an adulterating or being adulterated
- adventurists — Plural form of adventurist.
- adverbialize — to make (a word) into an adverb
- adversaryism — an attitude, as in labor-management negotiations, that any opposition to demands indicates an unwillingness of one side to cooperate and bargain in good faith.
- adversatives — Plural form of adversative.
- advertisable — to announce or praise (a product, service, etc.) in some public medium of communication in order to induce people to buy or use it: to advertise a new brand of toothpaste.
- advertorials — Plural form of advertorial.
- aelurophilia — ailurophilia.
- aelurophobia — ailurophobia.
- aeolian harp — a stringed instrument that produces a musical sound when a current of air or wind passes over the strings
- aerial input — a socket for an aerial