1. ephemeris time a measure of time defined by Earth's orbital motion
  2. euphemism an inoffensive expression substituted for an offensive one
  3. ephemeral anything short-lived, as an insect that lives only for a day
  4. ephemeris an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year
  5. Ephemeridae mayflies
  6. euphemistic substituting a mild term for a harsher or distasteful one
  7. ephemerality the property of lasting for a very short time
  8. Ephemeroptera mayflies
  9. ephemerid short-lived insect
  10. Ephemerida mayflies
  11. meristem undifferentiated tissue from which new cells are formed, as at the tip of a stem or root
  12. overtime work done in addition to regular working hours
  13. enterostomy surgical operation that creates a permanent opening through the abdominal wall into the intestine
  14. isomerism the state of being an isomer
  15. emery stone a mixture of emery dust and a binder
  16. allomerism (chemistry) variability in chemical composition without variation in crystalline form
  17. amoristic of or pertaining to romantic love
  18. ephemeropteran short-lived insect
  19. overestimate make too high an approximation of
  20. peristome (botany) fringe of toothlike appendages surrounding the mouth of a moss capsule