diel

[dahy-uh l, dee-]

adjective Biology.

of or relating to a 24-hour period, especially a regular daily cycle, as of the physiology or behavior of an organism.

Origin of diel

1930–35; apparently < Latin di(ēs) day + -al¹, spelling with e to avoid identity with dial

The Marmalade Pippin of Diel which is described in the 22 vol.
British Pomology
Robert Hogg
Origin unknown; Diel states he had received it from Strasland, Prussia.
The Pears of New York
U. P. Hedrick
Diel, first to describe it, placed its origin at about 1806.
The Pears of New York
U. P. Hedrick
According to Diel this variety originated in the environs of Halle, Prussia.
The Pears of New York
U. P. Hedrick
Diel erred in applying the synonymes of Knoops Pigeon bigarr to this variety, which is very distinct from the Pigeonnet.
British Pomology
Robert Hogg