Complex sentence: The name "Lida" is derived from the name of the river "Lidzeya", whose origin is associated with the Lithuanian appellative "Lyda"- "Lydimas", meaning "to fuse, to cast (denoting forest clearing)".
Split into simpler sentences: The name "Lida" is derived from the name of the river "Lidzeya". It's origin is associated with the Lithuanian appellative "Lyda"- "Lydimas", meaning "to fuse, to cast (denoting forest clearing)".