[f. ABSTRUSE + -NESS.] The quality of being abstruse; obscurity, difficulty of apprehension.
a. 1691. Boyle, Wks., II. 267 (R.). It is the abstruseness of what is taught in them that makes them almost inevitably so [obscure].
1754. Edwards, Fr. of Will (ed. 4), II. vii. 90. Not to insist any longer on the abstruseness of this distinction.
1810. Coleridge, Friend, I. III. 18. You hear The Friend complained of for its abstruseness and obscurity.
