15-Letter Words Containing: S,T,R,O,P,H,A,R,I,A

• The study of the stratigraphic distribution of fossils.

• (botany) the development of a fruit without fertilization or seeds

• someone who writes their own biography

• a radiogram produced by radiation emitted by the specimen being photographed

• telegraphy that uses transmission by radio rather than by wire

• the use of radio to send telegraphic messages (usually by Morse code)

• roentgenographic examination of arteries

• a medical specialist who uses radioactive substances and X-rays in the treatment of disease