D defs.my
Entry 1 sense Webster, 1913

Registrant

/(-trant)/ · Reg·is·trant · IPA /rˈɛdʒəstrənt/
01 n. One who registers; esp., one who , by virtue of securing an official registration, obtains a certain right or title of possession, as to a …
  1. 1.
    One who registers; esp., one who , by virtue of securing an official registration, obtains a certain right or title of possession, as to a trade-mark.