Definition
In medical jurisprudence, anaphrodisia denotes the incapacity for sexual intercourse, or the complete absence of sexual appetite, as it bears on legal proceedings — most commonly questions of marriage validity, annulment, and divorce. Black's Law Dictionary (2nd Ed.) treats the term as substantially equivalent to impotentia coeundi and frigidity, encompassing both the physical inability to perform sexual intercourse and the absence of sexual desire, in either a man or a woman. When the condition presents in a woman and specifically involves painful or impossible intercourse, it may be designated dyspareunia, a narrower clinical term.
The legal relevance of anaphrodisia lies in its potential to ground a claim that a marriage was never consummated, or that one party was permanently incapable of the marital relation at the time of the ceremony — a recognized basis for annulment in many common law jurisdictions.
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Common Language
Modern common usage (Wiktionary): Lack of desire for sex.
Historical common usage (Webster's 1913): Absence of sexual appetite.
The gap between common and legal meaning here is meaningful. In ordinary usage, anaphrodisia is purely a matter of desire — a psychological or physiological absence of libido. In legal and medical-jurisprudence usage, the term extends further to encompass physical incapacity for intercourse itself, regardless of whether desire is present or absent. A person may have normal sexual appetite yet still fall within the legal definition if physical performance is impossible. Researchers must not read the term through its common meaning alone when evaluating historical legal records.
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Common Confusion
Anaphrodisia is frequently used interchangeably with impotentia coeundi and frigidity in older legal sources, but these are not fully synonymous. Impotentia coeundi is the classical Latin term of art for incapacity to consummate — the precise legal ground for annulment — and is the more technically precise term in ecclesiastical and common law pleading. Frigidity carries a narrower historical connotation referring primarily to women and often blending incapacity with lack of desire in a way that conflates medical and moral judgments. Dyspareunia, noted in Black's as a variant applicable to women, is a distinct clinical term covering painful intercourse rather than complete incapacity or absence of desire. Researchers working in historical annulment records should track which term a court or pleading actually employs, as courts were not always consistent in their use.
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Why It Matters in Research
Anaphrodisia appears in the Law Mind corpus almost exclusively in the context of marriage law, specifically annulment proceedings and canonical impediments to marriage. Researchers should be alert to several navigational issues.
First, the term is a medical-jurisprudence term of art that peaked in legal usage in the nineteenth and early twentieth centuries. It is unlikely to appear in modern American case law or statutes by this name; modern sources will use clinical or statutory language addressing consummation, sexual dysfunction, or physical incapacity.
Second, historical sources — ecclesiastical court records, treatises on domestic relations, and early American divorce and annulment materials — may use anaphrodisia, impotentia, and frigidity interchangeably or as terms with overlapping but distinct meanings depending on the author and era. Any research into historical annulment doctrine requires tracking all three terms across sources.
Third, the inclusion of "either man or woman" in Black's definition is notable for its era. Older ecclesiastical sources more commonly addressed male impotency as the paradigm case, with female incapacity treated as an anomaly or assimilated under different terminology. The Black's formulation signals the term's broadened scope by the late nineteenth century.
Fourth, corpus researchers connecting to medical jurisprudence materials will find anaphrodisia discussed alongside other conditions affecting marriage capacity — including idiocy, insanity, and intoxication — as part of the broader question of whether a valid marriage could be contracted or consummated.
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Historical Dictionary Support
Black's Law Dictionary (2nd Ed.) is the sole historical dictionary source for this term in the Law Mind corpus, and its entry is brief but precise. It performs three functions: it equates anaphrodisia with impotentia coeundi and frigidity as near-synonyms; it confirms the term applies to both sexes; and it flags dyspareunia as the applicable variant when the condition in women involves painful rather than simply impossible intercourse.
What the historical dictionary entry does not supply is any doctrinal framework — it does not explain the legal consequences of the condition, the procedural posture in which it would be proved, or the standards of evidence courts applied. Researchers must look to domestic relations treatises and case law to fill that gap. The entry reflects the term's home in medical jurisprudence as a bridge discipline between medicine and law, characteristic of late nineteenth-century legal reference works that drew heavily on forensic medicine literature.
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Jurisdictional Note
The legal consequences of anaphrodisia varied between ecclesiastical and civil jurisdictions and between American states. In English ecclesiastical tradition, impotence existing at the time of marriage rendered the marriage voidable. American jurisdictions differed on whether the marriage was void or voidable, and on whether post-marriage incapacity (as opposed to pre-existing incapacity) was a cognizable ground. Researchers working across jurisdictions should not assume uniform treatment.
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