both-handedness

both-handed +‎ -ness

both-handedness (uncountable)

1. Ambidexterity.
   • 1893, John Clark Ridpath, Great races of mankind, page 40:

     It has been claimed by some modern scientists that ambidexterity, or both-handedness, is the natural condition of the race, and that the use of one hand or the other by preference is an acquired habit belonging to the period of development in childhood.

   • 2012, Sally Smith, No Easy Answer: The Learning Disabled Child at Home and at School, →ISBN:

     Until recently, and even now, both-handedness (ambidextrousness) has been mentioned as a cause of reading difficulties rather than seen as an indicator of immaturity.

   • 2013, Marjorie Garber, Bisexuality and the Eroticism of Everyday Life, →ISBN, page 291:

     The binary nature of the study in effect erases mixed or both-handedness.

2. The property of involving two sides, approaches, or orientations.
   • 1867, C.H. Spurgeon, The Sword and the trowel, →ISBN, page 58:

     Serving God with one hand and the devil with the other is a style of both-handedness from which we may well pray to be saved.

   • 2011, Nilashis Nandi, Chirality in Biological Nanospaces: Reactions in Active Sites, →ISBN, page 5:

     The opposite-handednesses of the monolayer domains composed of D- and L-enantiomers, presence of both-handedness in racemic domains, ...

   • 2014, D. Stanley-Jones, K. Stanley-Jones, The Kybernetics of Natural Systems: A Study in Patterns of Control, →ISBN, page 88:

     They exhibit accordingly that property of amphi-cheirality or both-handedness which was noted in the laterales nerves of the lamprey, betokening a possible affinity with the circular neural ring of the jelly-fish.