To save this word, you'll need to log in.
plural henrys or henries
Definition of henry
(Entry 1 of 7)
: the practical meter-kilogram-second unit of inductance equal to the self-inductance of a circuit or the mutual inductance of two circuits in which the variation of one ampere per second results in an induced electromotive force of one volt
Henry
biographical name (1)Definition of Henry (Entry 2 of 7)
name of 8 kings of England: I 1068–1135 (reigned 1100–35); II 1133–1189 (reigned 1154–89); III 1207–1272 (reigned 1216–72); IV 1366–1413 (reigned 1399–1413); V 1387–1422 (reigned 1413–22); VI 1421–1471 (reigned 1422–61 and 1470–71); VII 1457–1509 (reigned 1485–1509); VIII 1491–1547 (reigned 1509–47)
Henry
biographical name (2)Definition of Henry (Entry 3 of 7)
name of 4 kings of France: I circa 1008–1060 (reigned 1031–60); II 1519–1559 (reigned 1547–59); III 1551–1589 (reigned 1574–89); IV (Henry III of Navarre) 1553–1610 (reigned 1589–1610)
Henry
biographical name (3)Definition of Henry (Entry 4 of 7)
1394–1460 the Navigator Portuguese prince
Henry
biographical name (4)Definition of Henry (Entry 5 of 7)
Joseph 1797–1878 American physicist
Henry
biographical name (5)Definition of Henry (Entry 6 of 7)
O. — see William Sydney porter
Henry
biographical name (6)Definition of Henry (Entry 7 of 7)
Patrick 1736–1799 American statesman and orator
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
Great Scrabble Words—A Quiz
- Which of the following Q-without-U words means the number five in cards or dice?

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Great Scrabble Words—A Quiz
Words to improve your Scrabble game
Take the quizSemantic Drift Quiz
A challenging quiz of changing words.
Take the quizSpell It
Can you spell these 10 commonly misspelled words?
Take the quizAdd Diction
Build a chain of words by adding one letter at a time.
Play the game
Share henry
Time Traveler for henry
The first known use of henry was circa 1890
See more words from the same year