attrition rate
— Noun
– English
～ the rate of shrinkage in size or number
absentee rate
— Noun
– English
～ the percentage of workers who do not report to work
aspect ratio
— Noun
– English
～ the ratio of the width to the height of a tv picture
Ambrogio Damiano Achille Ratti
— Noun
– English
～ pope who signed a treaty with Mussolini recognizing the Vatican City as an independent state (1857-1939)
Achille Ratti
— Noun
– English
～ pope who signed a treaty with Mussolini recognizing the Vatican City as an independent state (1857-1939)
American rattlebox
— Noun
– English
～ tropical American annual herb having an inflated pod in which the ripe seeds rattle
alpha ray
— Noun
– English
～ the radiation of alpha particles during radioactive decay
actinic ray
— Noun
– English
～ electromagnetic radiation that can produce photochemical reactions
acetate rayon
— Noun
– English
～ a fabric made from fibers of cellulose acetate
acoustic reactance
— Noun
– English
～ opposition to the flow of sound through a surface; acoustic resistance is the real component of acoustic impedance and acoustic reactance is the imaginary component
allergic reaction
— Noun
– English
～ hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
aldol reaction
— Noun
– English
～ a reaction of aldehydes resulting in an aldol
anxiety reaction
— Noun
– English
～ an anxiety disorder characterized by chronic free-floating anxiety and such symptoms as tension or sweating or trembling or lightheadedness or irritability etc that has lasted for more than six months
anamnestic reaction
— Noun
– English
～ renewed rapid production of an antibody on the second (or subsequent) encounter with the same antigen