{
A-cron′yc
, A-cron′ych-al
, }
[Gr.
ἀκρόνυχοσ
at nightfall;
ἄκροσ
+
νύξ
night.]
(Astron.)
Rising at sunset and setting at sunrise, as a star; – opposed to
cosmical
.
☞ The word is sometimes incorrectly written acronical, achronychal, acronichal, and acronical.