A radar return generated by the response of an aircraft's transponder to an interrogation signal broadcast by a radar installation, containing additional encoded identification and situational data not available from a simple primary return.
The second stage of a multistage thermonuclear weapon, which generates a fusion explosion when imploded as an indirect result of the fission explosion of the primary; in a few extremely large weapons, the secondary may itself implode a fusion tertiary.
An act of issuing more stock by an already publicly traded corporation.
From Middle English secundarie, from Latin secundārius ("of the second class or quality"), from secundus (whence the English second) + -ārius (whence the English suffix -ary); compare the French secondaire, the Italian secondario, the Occitan secundari, the Portuguese secundario, and the Spanish secundario.
Modern English dictionary
Explore and search massive catalog of over 900,000 word meanings.
Word of the Day
Get a curated memorable word every day.
Challenge yourself
Level up your vocabulary by setting personal goals.