The printer’s manuscript reads heighth instead of the standard height, here in Alma 50:2 as well as in three other places in the text:
In Alma 53:4, the original manuscript reading highth may stand for either the pronunciation /haith/ or /haih/. Under the noun height, the Oxford English Dictionary lists the form highth with the pronunciation /haih/ as an alternative for height /hait/. The OED further explains that “in Middle English the forms in -t were predominant in the north and since 1500 have increasingly prevailed in the literary language, though heighth and highth were abundant in southern English writers till the 18th century”. Most likely, Oliver Cowdery’s spelling highth in 𝓞 for Alma 53:4 stands for heighth.
For all four cases of heighth, the 1830 typesetter corrected the colloquial heighth to the standard height, although in one instance (here in Alma 50:2), the 1837 edition reverted to the nonstandard heighth (and the 1840 and 1841 editions continued with that form, thus showing its prevalence in the language of the time). The form heighth is common in English today, including my own speech. The critical text will restore all four occurrences of heighth, despite the fact that this form may be due to dialectal overlay on the part of Joseph Smith and Oliver Cowdery.
In no place do the manuscripts read height except in the plural heights, and these instances are restricted to quotations from the King James Bible:
In the first example, however, the King James text itself has the singular forms depth and height.
Summary: Restore the colloquial form heighth to the four places where it originally occurred in the earliest Book of Mormon text: Alma 50:2, Alma 53:4, Helaman 14:23, and Ether 3:1.