Vexillology is the study of the history and symbolism of flags. Like any field of study, it has its own jargon and technical terms. Terms used in these pages are defined here.
The date a flag is officially adopted in accordance with a legal statute, official proclamation, or other such official pronouncement.
That quarter of the flag at the upper hoist.
A flag for use by private citizens at sea.
A flag for use by private citizens on land.
Adding badges, devices or other symbols to a flag already in existence.
A flag for use at sea only.
The background colour of a flag.
Heraldic edging (i.e. a thin border) around an object, historically only white (silver) or yellow (gold).
The ratio of the width to the length of the flag, given as a ratio of integers in the form n:m (width:length).
The half of the flag furthest away from the hoist.
The study of Arms and Shields.
That half of the flag adjacent to the edge attached to a pole, rope, or other device used to suspend a flag horizontally or vertically.
A flag for use by official Government defence forces at sea.
A flag for use by official Government defence forces on land.
A flag or ensign for use by the official Government and, usually, its instruments of office, at sea.
A flag or ensign for use by the official Government and, usually, its instruments of office, on land.