The three standard sex symbols in biology are male ♂, female ♀ and hermaphroditic ; originally the symbol for Mercury, ☿, was used for the last. These symbols were first used by Ca… See more

Minimal kinship chart: a male and female producing male and female offspring Kinship charts use a triangle △ for male and circle ○ for female. Pedigree charts published i… See more

The modern gender symbols used for public toilets, ︎ for male and ︎ and female, are pictograms created for the British Rail system in the mid-1960s. Before that, local u… See more

Since the 1970s, variations of gender symbols have been used to express sexual orientation and gender politics. Two interlocking male symbols are used to represent g… See more

^ In the biological sense of the word, there are no human (or mammalian) hermaphrodites, but 'hermaphodite' has long been used for ambisexual people who are now m… See more