Definify.com

Webster 1913 Edition

adv.

In accordance with the constitution or natural disposition of the mind or body; naturally;

as, he was

constitutionally

timid

The English were

constitutionally

humane.

Hallam.

In accordance with the constitution or fundamental law; legally;

as, he was not

constitutionally

appointed

Nothing would indue them to acknowledge that [such] an assembly . . . was

constitutionally

a Parliament.

Macaulay.

adv.

In consistency with the constitution or frame of government.

constitutionally ‎(comparative more constitutionally, superlative most constitutionally)

Pertaining to one's bodily constitution; physically, physiologically.
- 2009, Karen Armstrong, The Case for God, Vintage 2010, p. 246:
  The astonishing progress of science had made God quite irrelevant; it had caused human beings to focus so intently on the physical world that they would soon be constitutionally unable to take God seriously.
In accordance with a political constitution.