Also found in: Thesaurus, Medical.


1. Not subject to death: immortal deities; the immortal soul.
2. Never to be forgotten; everlasting: immortal words.
3. Of or relating to immortality.
4. Biology Capable of indefinite growth or division. Used of cells in culture.
1. One not subject to death.
2. One whose fame is enduring.

[Middle English, from Old French immortel, from Latin immortālis; see mer- in Indo-European roots.]

im·mor′tal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in classic literature ?
Here the Emperor sent his minister for Li Po, and here the great lyrist set her mortal beauty to glow from the scented, flower-haunted balustrade immortally through the twilights yet to come.
After riding a few paces in silence, Napoleon turned to Berthier and said he wished to see how the news that he was talking to the Emperor himself, to that very Emperor who had written his immortally victorious name on the Pyramids, would affect this enfant du Don.*
Be the foregone evil what it might, how could they doubt that their earthly lives and future destinies were conjoined when they beheld at once the material union, and the spiritual idea, in whom they met, and were to dwell immortally together; thoughts like these -- and perhaps other thoughts, which they did not acknowledge or define -- threw an awe about the child as she came onward.
'Immortally safe, sir,' returned Uriah, writhing in the direction of the voice.
Gendi's enriching TV and cinema roles will immortally live in the minds and hearts of his fans and in the history of the Egyptian cinema and TV.
Through confession, exaggeration, fabrication, and recollection, literature has given more color and flavor to the face of the Singaporean or the Singapore resident, no longer just a number and statistic or a nameless, faceless homogenous member of a collective but a human individuated by differences, fleshed out and alive, living immortally through metaphor and words.
(For Christians, praying over.) 'Instant' has got to a point that, with a click of a finger, one spreads - universally and immortally through the 'cloud' - his ignorance and rudeness.
Horace put it immortally with his lapidary line: "Captive Greece led captive her fierce conqueror and introduced the arts into rude and rustic Latium." The Roman way is a way of cultural deference before external models that convict one of inferiority but that also invite ascent and entrance into a higher form of being human.
There are certain relationships, a very few perhaps, in the world that are fixed, purely and immortally, in the realm of logic and mathematics.
In Cervantes's world, reading books leads to action and metamorphosis, so immortally embodied by Don Quixote.
Without belaboring the notion of the "male gaze" in a popular magazine, though Medina Onrubia lived to 78, all the photos of her are as a young woman: like the MPDG, she is "immortally fixed at the physical and mental age of nineteen-and-a-half" (Penny, "I Was" <http://www.newstates>; See also Schwyzer, "The Real-World"; O'Ryan, "8 Quirky"; Sarkeesian, "Tropes").
Not only has she died; now he sees that his love for her is not immortally strong.