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eo- primeval; early.
Eocene of, relating to, or designating the geological epoch between the Paleocene and Oligocene of the Tertiary Period, from approximately 54 million to 38 million years ago, when modern mammals became dominant. [2 definitions]
EOE abbreviation of "equal opportunity employer."
eolian of sand or rock matter, carried, produced, or formed by the wind.
eolithic of, relating to, or designating the earliest period of human culture, characterized by the first use of stone tools.
eon in geology, the longest division of time, encompassing two or more eras. [2 definitions]
eosin a red crystalline powder, used in staining tissues for microscopic viewing, in coloring gasoline, and in ink manufacturing.
-eous resembling; of the nature of; -ous.
EPA abbreviation of "Environmental Protection Agency."
epaulet an ornamental shoulder strap or board, sometimes with fringes, as on some military uniforms.
épée a fencing sword having a three-sided blade and a blunt circular tip guard.
eph- on; upon.
ephedrine a drug used to treat respiratory ailments such as asthma or nasal congestion.
ephemeral lasting for only a short period. [3 definitions]
ephemerid see mayfly.
ephemeris a table or a collection of tables giving the projected positions of celestial bodies for every day of a certain period.
Ephesians a book of the New Testament, consisting of a letter written by the apostle Paul to the Christians of Ephesus.
ephod a richly embroidered vestment worn by the Jewish clergy in ancient times.
epi- on; upon. [3 definitions]
epiblast the outer layer of cells of a developing embryo that later becomes the ectoderm, but that also contains cells capable of becoming the mesoderm or endoderm. [2 definitions]
epic referring or pertaining to a long poem that celebrates a hero or heroes and recounts their deeds in a grand style. [5 definitions]