Source: Nisga'a Tribal Council / Ayuukhl Nisga'a Department, Aiyansh BC
Spelled T'aam Mits'ii'aadin in Nisga'a Treaty Agreement-in-Principle and in correspondence with Ayuukhl Nisga'a Department. Spelled T'aam Mits'iiaadin in Nisga'a Treaty Final Agreement, Appendix F-2.
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office
T'aam Mits'iiaadin means "Lake of Mits'ii'aadin" (sic). The name Mits'ii'aadin is derived from the phrase "mits'iks aadin", a reference to a fishing technology used by Nisga'a ancestors here. A seine-type net was secured to moorings fixed to a rock bluff at the source of the Mits'ii'aadin River. Once there were fish in the net, the net was gathered up towards the rock bluff or beach area. Similarly, the phrase "Tk'almits'dinhl aadin" translates as "you push your net against or towards" (the rockbluff or shore). [tk'al/ against (something); mits'/ squeeze, press, push; aat/ net; in/you]. "T'aam" is a derivation of the word t'ax (lake), meaning "lake of".
Source: Nisga'a Tribal Council / Ayuukhl Nisga'a Department, Aiyansh BC