5. (Anat.)

Defn: A radical vessel. See under Radical, a.

RADICALISM
Rad"i*cal*ism, n. Etym: [Cf. F. radicalisme.]

Defn: The quality or state of being radical; specifically, the doctrines or principles of radicals in politics or social reform. Radicalism means root work; the uprooting of all falsehoods and abuses. F. W. Robertson.

RADICALITY
Rad`i*cal"i*ty, n.

1. Germinal principle; source; origination. [Obs.] Sir T. Browne.

2. Radicalness; relation to root in essential to a root in essential nature or principle.

RADICALLY
Rad"i*cal*ly, adv.

1. In a radical manner; at, or from, the origin or root; fundamentally; as, a scheme or system radically wrong or defective.

2. Without derivation; primitively; essentially. [R.] These great orbs thus radically bright. Prior.