- phase change
- phase coincidence
- phase difference
- phase displacement
- phase distribution
- phase shift
- phenacetin
- phenaceturic
- phenacyl
- phenanthridine
- phenanthridone
- phenasic acid
- phenate
- phenetole
- phenocryst
- phenodin
- phenol
- phenol extraction
- phenol process
- phenol removal
- phenolate process
- phenolic foam
- phenolic plastic
- phenolic resin
- phenolphthalein
- phenolsulfon
- phenolsulphon
- phenothiazine
- phenoxazine
- phenoxide
- phenyl iodide
- phenyl isocyanate
- phenyl salicylate
- phenylacetaldehyde
- phenylacetamide
- phenylacetic
- phenylated
- phenylcarbinol
- phenylchromone
- phenylethylene
- phenylglycine
- phenylhydrazine
- phenylhydrazone
- phenylhydroxylamine
- phillipsite
- phoenicochroite
- pholidolite
- phonolite
- phonolysis
- phorone
- phosphate cement
- phosphate process
- phosphatemia
- phosphatic conglomerate
- phosphatic limestone
- phosphatic ore
- phosphatic pebble
- phosphatododecatungstate
- phosphide
- phosphite
- phospholeum
- phosphomolybdic
- phosphophyllite
- phosphor tin
- phosphoric
- phosphoric acid
- phosphoric ester
- phosphorite
- phosphoroscope
- phosphorous
- phosphoryl
- phosphorylase
- photochemical decomposition
- photochemical reaction
- photochromic glass
- photographic plotter
- photolysis
- photometer
- photometry
- photoneutron
- photoreaction
- phthalein
- phthalide
- phyllite
- physical constants
- physical geography
- pick
- pickling
- pickling salt
- picryl
- piedmond
- piezometric map
- pig
- pigging
- pigment floating
- pillow lava
- pilot burner
- pin gate
- pinning
- pioneer well