Abarim Publications' online Biblical Greek Dictionary
The particle τε (te) is one of conjunction without any spectacular exceptions. It basically means "and" and is an alternative for (or sometimes fortifying companion of) the much more common particle of conjunction και (kai), meaning "and".
Our particle often appears with other particles, often merely as introductory and not with much meaning of its own. Together with the particle of conditional conjunction ει (ei), meaning "if" it forms the compound conjunction ειτε (eite), meaning "and if" or "whether".