abut on ‎(third-person singular simple present abuts on, present participle abutting on, simple past and past participle abutted on)

  1. (transitive) To border on.
    • 1919, Katherine Routledge, The Mystery of Easter Island,[1] Cosimo, Inc. (2007), ISBN 1-60206-698-1, page 24,
      The fronts of the houses abut on the pathway, which is about four feet wide, and are unequally places, following the contour of the ground.
    • 1942, Francis Ernest Lloyd, The Carnivorous Plants,[2] Read Books (2007), ISBN 1406757020, page 97,
      The stalked gland (14 — 12-15) has a capital of usually 32 cells radiating from the centre and standing out like an umbrella top. These cells all abut on a central short cell resting on the top of the long stalk cell.
    • 2007, Andrew Barker, The Science of Harmonics in Classical Greece,[3] Cambridge University Press, ISBN 0-521-87951-5, page 209,
      Now the two bounding notes of an enharmonic tetrachord of the relevant sort will indeed both be the lowest notes of pykna when the tetrachords are put together in conjunction; but the higher of them can never abut on a pyknon in the case envisaged here, where the tone is introduced to disjoin the tetrachords.