The prefix 'syn' conveys the idea of something being equal and the use of the prefix is so wide that you might find it one of the most valuable among all the prefixes. You can find the use of the prefix in the word like symbiotic, synchronous and symmetrical.
If you are delve into the formation of the word symbiotic you will find that it is formed of the two terms; syn and biotic. The meaning of the word syn is described above and thy word biotic is taken from the word 'bios' that means life. So the meaning that the word conveys is that of equality of life and you can use the word for the kind of creatures, the life of whom is dependent on some other creature and that creature's life is dependent upon this one. So the lives of both of these creatures are equal and so is the use of the word.
If you are delve into the formation of the word symbiotic you will find that it is formed of the two terms; syn and biotic. The meaning of the word syn is described above and thy word biotic is taken from the word 'bios' that means life. So the meaning that the word conveys is that of equality of life and you can use the word for the kind of creatures, the life of whom is dependent on some other creature and that creature's life is dependent upon this one. So the lives of both of these creatures are equal and so is the use of the word.