Sometimes epiphora is not a result of excessive tear production but is a problem with tear drainage. Normally tears exit the eye through small holes called puncta, which leads to a duct called the nasolacrimal duct which empties out into the nose. This is why we have to blow our noses whenever we have a good cry.
Arithmetic (from the Greek á¼ÏÎ¹Î¸Î¼ÏÏ arithmos, number) is a branch of mathematics that consists of the study of numbers, especially the properties of the traditional operations between themâaddition, subtraction, multiplication and division.
Mathematics. ( 1 of a proof) in strict logical form with a justification for every step. ( 2 of a calculation) correct in form; made with strict justification for every step. ( 3 of a calculation, derivation, representation, or the like) of or relating to manipulation of symbols without regard to their meaning.