- the eleventh letter of the Greek alphabet (?, ?)
- Particle Physics an uncharged hyperon with a mass of c. 1,115.68 MeV/c, which is c. 2,183 times the mass of an electron: it decays very rapidly, usually into a nucleon and a pionsometimes called lambda particle or lambda hyperon
Origin of lambdaClassical Greek ; from Sem, as in Classical Hebrew (language) l?medh, lamed
Origin of lambdaGreek, of Phoenician origin; see lmd in Semitic roots.
from Greek λάμδα
lambda - Computer Definition
( ) The Greek letter used by physicists to denote wavelength. See wavelength.
lambda - Investment & Finance Definition
The ratio of the percentage change in an option’s price to the percentage change in an underlying price. Lambda measures the change in option premiums for a percentage point change in the option’s implied volatility. If lambda is high, the value of an option is very sensitive to even small changes in volatility. A low lambda means that volatility changes have little impact on the value of an option.