noun an infinitely small quantity; that which is less than any assignable quantity.
2. infinitesimal ·adj infinitely or indefinitely small; less than any assignable quantity or value; very small.
noun an infinitely small quantity; that which is less than any assignable quantity.
2. infinitesimal ·adj infinitely or indefinitely small; less than any assignable quantity or value; very small.
Webster English vocab. Английский словарь Webster. 2012