There is no prefix for it. Usually this is tuplet like octuplet.
it means "new" didymos means "twin". so element 60- neodymium means new twin
Hypnosis is from the Greek root Hypnos, the Greek personification of sleep whose twin was Thánatos, or death.
The name Thomas is the Greek form of the Aramaic name תָּאוֹמָא (Ta'oma') which meant "twin".In Hebrew, the word for twin is te'om (תאום).
Didymus ia a medical term for one of the testes. It is also related to the Greek word for twin didymos.
Castor and Pollux
Apollo and Artemis are twin Greek gods.
Artemis
athena is not a twin and i am talking about the greek myths she is the wise one!:)
The Swedish word for twin is tvilling.
Artemis
Artemis.