Napierian logarithm/nəʹpiəri·ən, nay-/ noun

• doctor
• doctoral
• doctorate
• Doctor of Philosophy
• Doctor of the Church
• doctrinaire
• doctrinal
• doctrine
• docudrama
• document
• documentary
• documentation
• documentative
• document case
• document reader
• docusoap
• docutainment
• dodder
• doddering
• doddery
• doddle
• dodeca-
• dodecagon
• dodecahedron
• dodecaphonic