| PHO | containing or characteristic of phosphorus |
|---|---|
| PHO | a clear or yellow-colored monobasic acid (H3PO2) |
| PHO | a planet (usually Venus) seen just before sunrise in the eastern sky |
| PHO | a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells |
| PHO | a unit of illumination equal to 1 lumen per square centimeter |
| PHO | pain in the eye resulting from exposure to bright light (often associated with albinism) |
| PHO | of or relating to or caused by light |
| PHO | genus of deciduous and evergreen east Asian trees and shrubs widely cultivated as ornamentals for their white flowers and red fruits |
| PHO | ornamental evergreen treelike shrub of United States Pacific coast having large white flowers and red berrylike fruits |
| PHO | a picture of a person or scene in the form of a print or transparent slide |
| PHO | a note acknowledging the source of a published photograph |
| PHO | in general, any very close finish |