What is Solderless?

Solderless definition and meaning on Dictionary terms:
any of various alloys fused and applied to the joint between metal objects to unite them without heating the objects to the melting point.
anything that joins or unites: the solder of their common cause.

verb (used with object)
to join (metal objects) with solder.
to join closely and intimately: two fates inseparably soldered by misfortune.

to mend; repair; patch up.

verb (used without object)
to unite things with solder.
to become soldered or united; grow together.