1. interplanetary space the part of outer space within the solar system
  2. interplanetary gas a rarefied flow of gas and charged particles (plasma) that stream from the sun and form the solar wind
  3. interplanetary dust microscopic particles in the interplanetary medium
  4. interplanetary medium interplanetary space including forms of energy and gas and dust
  5. interplanetary between or among planets
  6. intergalactic space the space between galaxies
  7. interstellar space the space between stars
  8. interpenetrate penetrate mutually or be interlocked
  9. interpersonal occurring among or involving several people
  10. interpenetration the action of penetrating between or among
  11. intercellular substance the body substance in which tissue cells are embedded
  12. integumentary system the skin and its appendages
  13. order Plantaginales coextensive with the family Plantaginaceae
  14. Enterobacteriaceae a large family of Gram-negative rod-shaped bacteria of the order Eubacteriales
  15. interspecies arising or occurring between species
  16. enterprise a purposeful or industrious undertaking
  17. intraspecies arising or occurring within a species
  18. interpretative dance a form of modern dance in which the dancer's movements depict an emotion or tell a story
  19. interpolate insert words into texts, often falsifying it thereby
  20. interpretive dance a form of modern dance in which the dancer's movements depict an emotion or tell a story