1. social relation a relation between living organisms
  2. legal relation a professional relation that is regulated by law
  3. spousal relationship the state of being a married couple voluntarily joined for life (or until divorce)
  4. spatial relation the spatial property of a place where or way in which something is situated
  5. exhilaration the feeling of lively and cheerful joy
  6. sexual attraction attractiveness on the basis of sexual desire
  7. skew correlation any correlation in which the rates of change of the variables is not constant
  8. logical relation a relation between propositions
  9. axial rotation rotary motion of an object around its own axis
  10. acceleration an increase in rate of change
  11. correlation a reciprocal connection between two or more things
  12. congratulations an expression of approval and commendation
  13. gastrulation the process in which a gastrula develops from a blastula by the inward migration of cells
  14. medical relation the professional relation between a health care professional and a patient
  15. sex segregation the traditional Hindu or Muslim system of keeping women secluded
  16. public relations a promotion intended to create goodwill for a person or institution
  17. Six Nations a league of Iroquois tribes including originally the Mohawk, Oneida, Onondaga, Cayuga and Seneca (the Five Nations); after 1722 they were joined by the Tuscarora (the Six Nations)
  18. Maxwell's equations four differential equations that summarize classical properties of electromagnetic fields
  19. exhilarating making lively and joyful
  20. exultation the utterance of sounds expressing great joy