NOUN (1)

1. follower of Lutheranism;


ADJECTIVE (2)

1. of or pertaining to Martin Luther or his teachings;
- Example: "the Lutheran doctrine of justification by faith alone"

2. of or pertaining to or characteristic of the branch of the Protestant Church adhering to the views of Luther;
- Example: "Lutheran doctrines"

The Collaborative International Dictionary of English v.0.48:

Lutheran \Lu"ther*an\, a. (Eccl. Hist.)
   Of or pertaining to Luther; adhering to the doctrines of
   Luther or the Lutheran Church.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lutheran \Lu"ther*an\, n. (Eccl. Hist.)
   One who accepts or adheres to the doctrines of Luther or the
   Lutheran Church.
   [1913 Webster] Lutheranism

WordNet (r) 3.0 (2006):

Lutheran
    adj 1: of or pertaining to Martin Luther or his teachings; "the
           Lutheran doctrine of justification by faith alone"
    2: of or pertaining to or characteristic of the branch of the
       Protestant Church adhering to the views of Luther; "Lutheran
       doctrines"
    n 1: follower of Lutheranism