[nawrth-mohst or, esp. British, -muh st]
Origin of northmost
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for northmost
They place it near the northmost of the two curtained columns.Caesar and Cleopatra
George Bernard Shaw
The shorter diagonal, from northmost base of Ziscaberg to southmost of Hradschin, is perhaps a couple of miles.
The rocks we were so near running upon were off the northmost isle, which we named the Island of Deceit.
(Um is the same in sound and sense with Ush the dawn, appearing from the eastern ridge of the northmost mountain).
Seymour, as the fast racer, was given the northmost route; Rolf took the middle.Rolf In The Woods
Ernest Thompson Seton