c.1368, "deadly," also "doomed to die" (c.1374), from O.Fr. mortel "destined to die," from L. mortalis "subject to death," from mors (gen. mortis) "death," from PIE base *mor-/*mr- "die" (cf. Skt. mrtih "death," Avestan miryeite "dies," O.Pers. martiya- "man," Lith. mirtis "mortal man," Gk. ambrotos "immortal," O.C.S. mrutvu "dead," O.Ir. marb, Welsh marw "died," O.E. morþ "murder"). The noun meaning "mortal thing or substance" is first recorded 1526. Mortality "condition of being mortal" is attested from 1340. In the sense of "loss of life on a large scale" it is from c.1400; as "number of deaths in a given period" it is first recorded 1645.
Main Entry: mor·tal Pronunciation: 'mort-&l Function: adjective 1: having caused or being about to cause death :FATAL <a mortal injury> 2: of, relating to, or connected with death <mortal agony>
Im*mor"tal\, a. [L. immortalis; pref. im- not + mortalis mortal: cf. F. immortel. See Mortal, and cf. Immortelle.]1. Not mortal; exempt from liability to die; undying; imperishable; lasting forever; having unlimited, or eternal, existance. Unto the King eternal, immortal, invisible. --1 Tim. i. 17. For my soul, what can it do to that, Being a thing immortal as itself? --Shak. 2. Connected with, or pertaining to immortability. I have immortal longings in me. --Shak. 3. Destined to live in all ages of this world; abiding; exempt from oblivion; imperishable; as, immortal fame. One of the few, immortal names, That were not born yo die. --Halleck. 4. Great; excessive; grievous. [Obs.] --Hayward. Immortal flowers, imortelles; everlastings. Syn: Eternal; everlasting; never-ending; ceaseless; perpetual; continual; enduring; endless; imperishable; incorruptible; deathless; undying.
Mere\, n. [Written also mar.] [OE. mere, AS. mere mere, sea; akin to D. meer lake, OS. meri sea, OHG. meri, mari, G. meer, Icel. marr, Goth. marei, Russ. more, W. mor, Ir. & Gael. muir, L. mare, and perh. to L. mori to die, and meaning originally, that which is dead, a waste. Cf. Mortal, Marine, Marsh, Mermaid, Moor.] A pool or lake. --Drayton. Tennyson.