1. (n.) The act of giving premature birth; particularly, the expulsion of the human fetus prematurely, or before it is capable of sustaining life; miscarriage.
2. (n.) The immature product of an untimely birth.
3. (n.) Arrest of development of any organ, so that it remains an imperfect formation or is absorbed.
4. (n.) Any fruit or produce that does not come to maturity, or anything which in its progress, before it is matured or perfect; a complete failure; as, his attempt proved an abortion.
Thesaurus Entries
Altmann theory, DNA, De Vries theory, Galtonian theory, Mendelianism, Mendelism, RNA, Verworn theory, Weismann theory, Weismannism, Wiesner theory, abiogenesis, abortion, accouchement, affiliation, allele, allelomorph, ancestry, animal spirits, animate existence, animation, apparentation, archigenesis, aristocracy, aristocraticalness, babyhood, bear, bearing, beget, beginning, beginnings, being alive, biogenesis, birth throes, birthing, blastogenesis, blessed event, blood, bloodline, blue blood, branch, breed, bring to birth, character, childbearing, childbed, childbirth, childhood, chromatid, chromatin, chromosome, commencement, common ancestry, confinement, consanguinity, cradle, creation, dawn, dawning, delivery, derivation, descent, determinant, determiner, development, diathesis, digenesis, direct line, distaff side, distinction, emergence, endowment, engender, epigenesis, eugenics, eumerogenesis, existence, extraction, factor, family, father, female line, filiation, freshman year, gene, generation, genesiology, genesis, genetic code, genetics, genteelness, gentility, give birth to, giving birth, hatching, having a baby, having life, hereditability, heredity, heritability, heritage, heterogenesis, histogenesis, homogenesis, honorable descent, house, immortality, inborn capacity, inception, inchoation, incipience, incipiency, incunabula, infancy, inheritability, inheritance, isogenesis, labor, life, lifetime, line, line of descent, lineage, liveliness, living, long life, longevity, male line, matrocliny, merogenesis, metagenesis, miscarriage, monogenesis, mother, multiparity, nascence, nascency, nativity, nobility, noble birth, nobleness, onset, opening, origin, origination, orthogenesis, outset, outstart, pangenesis, parentage, parthenogenesis, parturition, patrocliny, pharmacogenetics, phylum, pregnancy, procreate, procreation, quality, race, rank, recessive character, replication, royalty, seed, sept, side, sire, slip, spear side, spindle side, spontaneous generation, spriteliness, start, stem, stirps, stock, strain, succession, sword side, the Nativity, the stork, travail, viability, vitality, vivacity, youth
