lowermost

American  

[loh-er-mohst, -muhst] / ˈloʊ ərˌmoʊst, -məst /

adjective

1. lowest.

---

lowermost British  

/ ˈləʊəˌməʊst /

adjective

1. lowest

---

Etymology

Origin of lowermost

First recorded in 1555–65; lower ¹ + -most

Example Sentences

"But we don't have any of this kind of large-scale understanding for flow in the lowermost mantle. And that's really what we want to get at."

From Science Daily • Apr. 23, 2026

It’s expected to flow through the breached dam in the coming days, with the lowermost reaches of the Dnipro River returning to a narrower channel unseen since the dam was built in the 1950s.

From Science Magazine • Jun. 9, 2023

In contrast, Brassard and Cloutier had recorded the exact stratigraphic location of the fossil they found: 90 meters above the lowermost layers of a distinctive geologic unit known as the Escuminac Formation.

From Scientific American • Jun. 17, 2020

Rather, as Ritchie explained, the movie was inspired by the search for what he called “equilibrium” in the “vortex” engendered by the long-standing tensions between the uppermost and lowermost strata of British society.

From Washington Post • Jan. 21, 2020

He was sitting on the lowermost branch, peering down, a knowing expression on his pointy face.

From "The Girl Who Drank the Moon" by Kelly Barnhill