EO

¹

1. executive order.

eo-

²

1. a combining form meaning “early,” “primeval,” used in the formation of compound words:

   Eocene; eohippus.

e.o.

³

abbreviation for

1. ex officio.

e.o.

¹

abbreviation for

1. ex officio

eo-

²

combining_form

1. early or primeval

   Eocene

   eohippus

Word History and Origins

Origin of EO¹

< Greek, combining form of ēṓs ( Attic héōs ) dawn; akin to east, Aurora

Word History and Origins

Origin of EO¹

from Greek, from ēōs dawn