ETYMOLOGY
from Latin pridianus (relating to the previous day),
from pridie (adv. on the day before),
from pri- before + dies a day + -anus (-an)
EXAMPLE
“… This Gann, I take it, has similar likings, for I hear him occasionally at midnight floundering up the stairs (his boots lie dirty in the passage)—floundering, I say, up the stairs, and cursing the candlestick, whence escape now and anon the snuffers and extinguisher, and with brazen rattle disturb the silence of the night. Thrice a−week, at least, does Gann breakfast in bed—sure sign of pridian intoxication; and thrice a−week, in the morning, I hear a hoarse voice roaring for ‘my soda−water.’ How long have the rogues drunk soda−water? …”
From: A Shabby Genteel Story,
And Other Tales.
By: William M. Thackeray, 1840
How Mrs. Gann received two lodgers.
Lexicophilia 