desk officer
- n a military officer who is not assigned to active duty
descant
- n a decorative musical accompaniment (often improvised) added above a basic melody
- v sing in descant
- v sing by changing register; sing by yodeling
- v talk at great length about something of one's interest
descartes
- n French philosopher and mathematician; developed dualistic theory of mind and matter; introduced the use of coordinates to locate a point in two or three dimensions (1596-1650)