7-Letter Words Containing: E,I,O

• convert (oxygen) into ozone

• enter into a combination with oxygen or become converted into an oxide

• add oxygen to or combine with oxygen

• either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length

• (astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic

• a horizontal plant stem with shoots above and roots below serving as a reproductive structure

• An isoenzyme

• Bioluminescence created by some types of fungus, particularly those growing on rotting wood.

• (by extension) Wood exhibiting fungal bioluminescence; torchwood.