D defs.my
Entry 1 sense Webster, 1913

Reddendum

/(r?d*d?n"d?m)/ · Red·den·dum · IPA
01 n. A clause in a deed by which some new thing is reserved out of what had been granted before; the clause by which rent is reserved in a lease.
  1. 1.
    A clause in a deed by which some new thing is reserved out of what had been granted before; the clause by which rent is reserved in a lease.(Law)