She is a research scientist who earned her Ph.D in physics.
Ph.D = the highest degree awarded in universities in many fields of study
"I am the Dr. Meescham who is the doctor of philosophy," said the voice.†
(source) Kate DiCamillo, Flora & Ulysses, 2013
Kate and I had talked about the fact that he was a doctor after all, though a doctor of philosophy.†
(source) James Patterson, Kiss the Girls, 1995
He was a Bachelor of Arts of Blodgett College, and a Doctor of Philosophy in economics of Yale.†
(source) Sinclair Lewis, Babbitt, 1922
Of course my work—I'm taking my Doctor of Philosophy degree in English—" She made it sound as though she were taking her earldom—"it's rather dry and detached.†
(source) Sinclair Lewis, Arrowsmith, 1925
The guests were Howard Littlefield, the doctor of philosophy who furnished publicity and comforting economics to the Street Traction Company; Vergil Gunch, the coal-dealer, equally powerful in the Elks and in the Boosters' Club; Eddie Swanson the agent for the Javelin Motor Car, who lived across the street; and Orville Jones, owner of the Lily White Laundry, which justly announced itself "the biggest, busiest, bulliest cleanerie shoppe in Zenith."†
(source) Sinclair Lewis, Babbitt, 1922
