12-letter words containing r, o
- achromatopsy — Color blindness; inability to distinguish colors; daltonism, achromatopia.
- 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
- acknowledger — to admit to be real or true; recognize the existence, truth, or fact of: to acknowledge one's mistakes.
- acne rosacea — rosacea.
- acorn squash — a kind of winter squash, acorn-shaped with ridged, dark-green skin and sweet, yellow flesh
- acoustimeter — a portable electronic device for measuring noise levels, especially those of traffic.
- 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.
- 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
- acylglycerol — (organic chemistry) Any ester of glycerol; glyceride.
- adam osborne — (person) The ex-book publisher who founded Osborne Computer Corporation.
- address book — An address book is a book in which you write people's names and addresses.
- adenosarcoma — a complex tumor containing both glandular and connective tissues.
- 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.
- adjournments — Plural form of adjournment.
- adjudicators — Plural form of adjudicator.
- adjudicatory — relating to adjudication
- 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.
- adorableness — very attractive or delightful; charming: What an adorable hat!
- adrenochrome — a chemical pigment produced by the oxidation of adrenaline
- adrianopolis — Edirne
- adulteration — an adulterating or being adulterated
- adulterously — In a adulterous manner.
- adverb group — An adverb group or adverbial group is a group of words based on an adverb, such as 'very slowly' or 'fortunately for us'. An adverb group can also consist simply of an adverb.
- 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
- aerification — an act of combining with air.
- aeroacoustic — Relating to aeroacoustics.
- aerodonetics — the study of soaring or gliding flight, esp the study of gliders
- aerodynamics — Aerodynamics is the study of the way in which objects move through the air.
- aeroelastics — the study of aeroelastic phenomena.
- aeroembolism — an embolism of air bubbles often caused by surgery, induced abortion, or decompression sickness
- aeromagnetic — of magnetism in the atmosphere
- aeromechanic — an aircraft mechanic
- aeromedicine — the medical treatment of disorders associated with air or space travel
- aeronautical — Aeronautical means involving or relating to the design and construction of aeroplanes.
- aeroneurosis — a functional disorder of aeroplane pilots characterized by anxiety and various psychosomatic disturbances, caused by insufficient oxygen at high altitudes and the emotional tension of flying
- aeroplankton — the tiny plants, animals, and bacteria living and floating in the air
- aerosiderite — a meteorite which is composed mainly of iron