Prot.

Protestant

proto- /prō-tō-/ or, before a vowel, prot- /prōt-/

1. Denoting: first
2. First of a series
3. First-formed
4. Primitive
5. Ancestral
6. A (specified) protolanguage (linguistics)

• radiogoniometers
• radiogram
• radio-gramophone
• radio-gramophones
• radiograms
• radiograph
• radiographer
• radiographers
• radiographic
• radiographically
• radiographies
• radiographs
• radiography
• radio ham
• radio hams
• radioimmunoassay
• radioing
• radio interferometer
• radioisotope
• radioisotopes
• radioisotopic
• radiolabelled
• Radiolaria
• radiolarian
• radiolarian ooze