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Plural form of words ending in -us

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first meaning given for this word, a slimy liquid, slime, in the most widely used Latin-English dictionaries is inaccurate; the error has been corrected in the more recent Oxford Latin Dictionary.) Nouns denoting entities that are countable pluralize (book, books); nouns denoting noncountable entities do not (except under special circumstances) pluralize (air, mood, valor). The term virus in antiquity appears to have belonged to the latter category, hence the nonexistence of plural forms.
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The Latin form of virus never had a plural form: In antiquity the word virus had not yet acquired, of course, its current scientific meaning; rather it denoted something like toxicity, venom, a poisonous, deleterious, or unpleasant agent or principle, or poison in the abstract or general sense. (The
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is generally regarded to be a neuter of the second declension, but the word is so rare that there are no recorded plurals. Possibilities include "vira" (in analog with 2nd declension) and "virus" (in analog with 4th declension masculine, although as a neuter noun the plural of virus in the 4th
235:: the Synchronic study of a language's form at a given moment, is the core of the discipline of linguistics as opposed to diachronic linguistics. Synchronic linguistics acknowledges the "viri" form as well as the historical "viruses" form. 177:
writers with reference to computer viruses. Most computer professionals unaffiliated with the warez, cracker, and virus writing scenes use the "viruses" form instead of the "virii" form.
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being used in Latin in a plural form, and it is unclear how a plural might have been formed had the word acquired a meaning requiring a plural form. Possibilities include
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aspects of the words "viri" and "virii", as well as arguments for and against their acceptability as an alternative to "viruses" in the English language.
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The "viri" form is used less often. It is sometimes used by professionals, and can refer to both biological and computer viruses.
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The forms "viri" and "virii" are also used as a plural, although (much) less frequently. This article discusses the origins and
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To make matters worse, it has been suggested that due to the Latin form of the word, the study of viruses should not be
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is not the correct plural. The "ii" ending only occurs in the plural of words ending in "ius". For instance, take
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There is some debate about what the rules of Latin grammar might imply about the formation of a plural. In Latin
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is "viruses". This form of the plural is correct, and used most frequently, both when referring to a
408:, "man"), but "virulogy." This spelling is extremely uncommon but it is used by a few universities. 425: 384: 188:
Are either of "viri" or "virii" acceptable alternatives to "viruses" in the English language?
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Also, the word 'viri' (or 'virii') does not appear in on-line English language dictionaries.
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The plural "virii" is frequently perceived to be founded on a misunderstanding of
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Arguments pro and contra the acceptability of "viri" and "virii"
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is used only for masculine nouns, not neuter ones such as
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to this revision, which may differ significantly from the
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The term is today an English language term, not Latin.
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The same is true of specialized dictionaries, e.g.:
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In English, the plural is normally formed by adding
161:. It may have originated as whimsical usage on 190: 339:, following the pattern for neuter nouns in 347:with a long "u", following the example of 66:Revision as of 21:53, 21 November 2004 by 217:is linked to a specific technical field ( 208:Justification for "viri" or "virii" forms 421:Discussion regarding the plural of virus 47: 246:Counters for the "viri"or "virii" forms 65: 14: 351:. However, none of these are attested. 312:is not the correct plural. The ending 243: 205: 193: 44: 25: 370:Free On-line Dictionary of Computing 17: 149:Origins and sociolinguistic aspects 119: 88: 120: 441: 414: 404:(which would be the study of the 52:. The present address (URL) is a 274:, frequently in preference to a 397:declension would be "virua"). 378:The On-line Medical Dictionary 13: 1: 331:There is no extant record of 426:What is the plural of virus? 359: 7: 297:, with the singular ending 24:of this page, as edited by 10: 446: 428:- Article on reference.com 221:), and so is considered 134:and when referring to a 45:21:53, 21 November 2004 95:← Previous revision 328:, and means "men". 357: 356: 324:is the plural of 278:'s native plural. 201: 200: 128:plural of "virus" 437: 219:computer science 195: 194: 191: 157:plurals such as 132:biological virus 124:English language 107:Newer revision → 85: 82: 61: 59:current revision 51: 50: 46: 42: 41: 445: 444: 440: 439: 438: 436: 435: 434: 432: 417: 362: 301:and the plural 251:Knowledge (see 248: 210: 186: 151: 143:sociolinguistic 118: 117: 116: 115: 114: 99:Latest revision 87: 86: 83: 72: 70: 57: 48: 31: 29: 12: 11: 5: 443: 430: 429: 423: 416: 415:External links 413: 390: 389: 386:Dictionary.com 382: 380:entry on virus 374: 372:entry on virus 361: 358: 355: 354: 353: 352: 329: 306: 293:: the root is 279: 264: 253:English plural 247: 244: 242: 241: 240: 236: 229: 226: 209: 206: 203: 202: 199: 198: 185: 182: 175:computer virus 150: 147: 136:computer virus 68: 54:permanent link 27: 16: 15: 9: 6: 4: 3: 2: 442: 433: 427: 424: 422: 419: 418: 412: 409: 407: 403: 398: 395: 388: 387: 383: 381: 379: 375: 373: 371: 367: 366: 365: 350: 346: 342: 338: 334: 330: 327: 323: 319: 315: 311: 307: 304: 300: 296: 292: 288: 284: 280: 277: 273: 269: 265: 262: 258: 254: 250: 249: 237: 234: 230: 227: 224: 220: 216: 213:The spelling 212: 211: 204: 197: 196: 192: 189: 181: 178: 176: 172: 168: 164: 160: 156: 146: 144: 139: 137: 133: 129: 126:, the normal 125: 112: 108: 104: 100: 96: 92: 80: 76: 71: 64: 63: 60: 55: 39: 35: 30: 23: 431: 410: 405: 399: 393: 391: 385: 377: 369: 363: 348: 344: 340: 336: 332: 325: 321: 320:; moreover, 317: 313: 309: 302: 298: 294: 290: 286: 282: 271: 267: 260: 256: 214: 187: 179: 158: 152: 140: 127: 121: 22:old revision 19: 18: 343:– or 233:linguistics 231:Synchronic 165:(see also: 69:Sietse Snel 28:Sietse Snel 20:This is an 308:In Latin, 281:In Latin, 259:simply as 360:Footnotes 289:, plural 276:loan word 402:virology 171:crackers 79:contribs 38:contribs 261:viruses 349:status 287:radius 223:jargon 394:virus 345:virus 333:virus 318:virus 295:radi- 291:radii 283:virii 257:virus 215:virii 163:BBSes 159:radii 155:Latin 337:vira 322:viri 310:viri 173:and 167:leet 111:diff 105:) | 103:diff 91:diff 75:talk 34:talk 406:vir 341:-um 326:vir 299:-us 272:-es 270:or 138:. 122:In 43:at 314:-i 303:-i 268:-s 97:| 93:) 77:| 36:| 305:. 263:. 225:. 113:) 109:( 101:( 89:( 81:) 73:( 62:. 40:) 32:(

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Free On-line Dictionary of Computing entry on virus

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