Definition of "ochreous"

The contact of the air causes the water to deposit an ochreous, brown precipitate, which contains the basic crenate of the peroxide of iron, together with the apocrenate.

1835, The American Journal of Science, volume 28, page 122

The white-walled drawing-room, dim in the ochreous twilight of drawn blinds, was hung with Richard's Italian water-colours and other pictorial mementos of the honeymoon […]

1923, Elizabeth Bowen, “The Lover”, in Encounters, page 117