- A prefix indicating unity or connection, akin to co-.
- cooperation, collaboration
- A prefix indicating composition, akin to syn-.
- put together, assemble
Inherited from Proto-Slavic *sъ(n)- (see с- (s-) and Proto-Slavic *sъ(n) for more information). The yer sound -ъ- was treated as strong when another yer followed in the next syllable, and was vocalized to -o-, whereas the yer in the next syllable was deleted, producing a consonant cluster.
- Alternative form of (used before certain consonant clusters)