Definition
A Latin term of art denoting the product of an abortion: the fetus or offspring expelled or delivered before it is capable of sustaining independent life. The term describes the physical result of the abortion event itself, not the process. In historical legal usage, abortus carried a specific implication — that the expelled fetus was incapable of life, distinguishing it from a premature birth in which the infant might survive.
Common Language
Modern common usage (Wiktionary): "An abortion" or "an aborted fetus, especially one aborted in early pregnancy."
Historical common usage (Webster's 1913): Webster's 1913 does not carry a standalone entry for abortus, reflecting its status as a term operating primarily within medical and legal Latin rather than ordinary English discourse.
The gap matters for researchers: Wiktionary's first definition — "an abortion" — conflates the process with the product. Legally, abortus has always referred to the product, not the act. A statute or opinion addressing the abortus is addressing the expelled fetus; a statute addressing abortion is addressing the procedure. These are distinct legal objects, and treating the terms interchangeably distorts historical legal analysis.
Common Confusion
Abortus is frequently encountered alongside abortion, aborticide, and stillborn in historical sources, and researchers sometimes treat them as interchangeable. They are not. Abortion refers to the act or event; abortus refers to what results from it. Stillborn refers to a child delivered dead at or near term — a stage of fetal development that historical sources treated as categorically distinct from abortus, which implied non-viability. The legal significance of the distinction turns on questions of live birth, personhood, inheritance, and cause of death in coroner proceedings.
Why It Matters in Research
Corpus researchers will encounter abortus primarily in three contexts: nineteenth-century medical jurisprudence, inheritance and descent cases, and early criminal law materials dealing with abortion as a common-law offense.
In medical jurisprudence, abortus appears in discussions of viability — the threshold question of whether expelled issue could have survived independently. Authors like Taylor and Beck used abortus as a technical marker distinguishing non-viable issue from premature births that might have constitutional life. Researchers working in this material should note that viability thresholds were not fixed: the point at which a fetus ceased to be categorized as abortus and might instead be considered a premature live birth shifted across sources and decades.
In inheritance and descent materials, abortus mattered because a child born alive, even briefly, could affect title, inheritance shares, and the distribution of an estate. A child categorized as abortus — never having had legal life — could not inherit and could not transmit inheritance. Cases and treatises turned on whether issue was born alive or was properly classified as abortus.
In criminal law, abortus appears in discussions of what had to be proven in abortion prosecutions: specifically, whether the expelled product needed to be produced as evidence and what its condition proved about gestational age and intent.
The term largely exits American legal usage over the course of the twentieth century, replaced in statutory and judicial writing by fetus, embryo, or products of conception. Researchers using full-text search in historical corpus should search abortus as a Latin form alongside abortion and abortive to capture the full range of period usage. The term will not surface in modern judicial opinions except in historical quotation or specialized medical-legal writing.
Historical Dictionary Support
The three source dictionaries are in complete agreement — an unusually clean convergence. Black's (1st ed.), Black's (2nd ed.), and Bouvier's all define abortus identically: the fruit of an abortion; the child born before its time, incapable of life. The language is formulaic and likely traces to a common medical-jurisprudence source rather than independent drafting.
Bouvier adds value by cross-referencing ABORTION, BIRTH, BREATH, DEAD-BORN, GESTATION, and LIFE — a cluster of terms that collectively formed the conceptual architecture of nineteenth-century fetal and perinatal legal status. This cross-reference network signals that abortus was not a freestanding term but a node in a larger system of legal distinctions. Researchers should treat those related entries as a research package rather than following any single term in isolation.
What the historical dictionaries do not address: the evidentiary role of abortus in criminal proceedings, the medical-legal debates over what examination of the abortus could establish, or the evolving scientific understanding of viability that complicated any fixed definition. For those dimensions, researchers must move beyond the dictionaries into medical jurisprudence treatises and case reporters directly.
Jurisdictional Note
Abortus as a term of art does not carry material jurisdictional variation — its definition was consistent across Anglo-American legal sources. Jurisdictional differences in this area attach to abortion and related crimes, not to the definition of what abortus means. Modern statutory schemes use different vocabulary entirely.