Answer: lambdas

AnswerCrossword Clue
LAMBDASFraternity letters
LAMBDASFollowers of kappas
LAMBDASLongitude symbols, in cartography
LAMBDASWavelength symbols
LAMBDASDecay constants, in physics
LAMBDASGreek L's
LAMBDASKappa followers
lambdasLAMBDA, a Greek letter
lambdasthe 11th letter of the Greek alphabet