An alphabetic run is a sequence of letters in the alphabet that are placed in order. The crossword solutions for the term alphabetic run are STU (3 letters), EFG (3 letters), NOP (3 letters), QRS (3 letters), RST (3 letters), CDEF (4 letters), LMNO (4 letters), MNOP (4 letters), PQRS (4 letters), RSTU (4 letters), and TUVW (4 letters). These solutions represent a continuous sequence of letters from the alphabet, starting with the letter S and ending with the letter W.