I think you are referring to the Unitarian Universalist symbol. See the related link.
The safety symbol for an open flame is quite simple to read and self explanatory. It is a plain colored background (usually yellow, red, orange, or black) with a flame in the center. It can come in different shapes such as square, triangle, or circle.
The symbol for an Equip Spell card is a cross (+). The cross is placed in the middle of a circle to resemble a sort of emblem.
Because the flame is the only symbol they could think of XD
A fire symbol is a stylized drawing of a flame.
The symbol flame is for flammable materials.
A flame represents the Holy Spirit.
A dollar sign is a tangible religious symbol. This symbol is used with catholic's.
Perhaps swine.
The circle is the symbol of the Apache Indian tribe because they believed that the life path of all creatures, including humans, are circular. The movement of the sun and the moon is also circular. The homes of the tribes are round and their religious ceremonies like the Hogan and the tipi are also circular.
its a Greek symbol to represent Zeus and the flame that never went out
R is the symbol
The a in circle symbol is the symbol for the word At. Example: soanso@(at)something.ca