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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Basic substance 3 letters:

LYE: Basic substance
LYE: Very basic substance
RNA: Basic cell substance
ALKALI: Basic substance
ELEM: Basic substances: Abbr.
ELEMENT: Basic substance.
ELEM: Basic substance: Abbr.