diagram

Meanings

1. A plan, drawing, sketch or outline to show the function or operation of something, or to show the relationships between the parts of a whole.
2. A graph or chart.
3. A functor from an index category to another category. The objects and morphisms of the index category need not have any internal substance, but rather merely outline the connective structure of at least some part of the diagram's codomain. If the index category is J and the codomain is C, then the diagram is said to be "of type J in C".
4. A crossword grid.

1. To represent or indicate something using a diagram.
2. To schedule the operations of a locomotive or train according to a diagram.

Etymology

Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwísder. Ancient Greek διά (diá) Ancient Greek δῐᾰ- (dĭă-) Proto-Indo-European *gerbʰ- Proto-Hellenic *grə́pʰō Ancient Greek γρᾰ́φω (grắphō) Proto-Indo-European *-mn̥ Ancient Greek -μᾰ (-mă) Ancient Greek γρᾰ́μμᾰ (grắmmă) Ancient Greek διάγραμμα (diágramma)der. Italian diagrammader. French diagrammeder. English diagram From French diagramme, from Italian diagramma, from Ancient Greek διάγραμμα (diágramma).