1) to be a witness, to bear witness, i.e. to affirm that one has seen or heard or experienced something, or that he knows it because taught by divine revelation or inspiration
1a) to give (not to keep back) testimony
1b) to utter honourable testimony, give a good report
1c) conjure, implore
Part of Speech: verb
Citing in TDNT: 4:474, 564
From G3144; to be a witness, that is, testify (literally or figuratively): - charge, give [evidence], bear record, have (obtain, of) good (honest) report, be well reported of, testify, give (have) testimony, (be, bear, give, obtain) witness.
|b speak well of||33.263|
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root μαρτυρέω; click on the second column to search for that grammatical form of the root μαρτυρέω; click on the third column to search for that word and grammatical form; click on the total to search for the root μαρτυρέω.