the caliber of being abstruse trouble of apprehension
- the caliber of being unclear or abstruse and challenging realize
- wisdom which recondite and abstruse and powerful
- the caliber of being abstruse; difficulty of apprehension.
(letter.) The standard of becoming abstruse; difficulty of apprehension.
It is in this department, from its abstruseness and complexity, that we should expect the advance of anatomy and physiology - normal and morbid - to be most delayed.