symbiosis:  a relationship between two different organisms that live together and depend on each other

 

symmetry:  having the same shape, size, and position on both sides of a dividing line

 

sympathy:  feeling kindness together with someone who suffers; pity; commiseration, compassion

 

symposium:  a conference or meeting together to discuss a topic

 

symptoms:  the conditions that together tell a doctor what is wrong

 

synagogue:  a place for meeting together for worship and religious instruction in the Jewish faith

 

syndicate:  a group of business people working together

 

synonym:  a word that has the same meaning as another word

 

synthesis:  parts put together to make a whole

 

synthetic:  formed to gather from artificial parts; not genuine; fake