Word origins

• modiusA Roman dry measure of about a peck or 9 litres.
• modus vivendiA way of living, especially a working arrangement to allow for peaceful coexistence between two parties in spite of differences or unresolved disputes.
• monitrixA female monitor.
• monochordA musical instrument for experimenting with the mathematical relations of musical sounds, consisting of a single string stretched between two bridges, one or both of which can be moved, and which stand upon a graduated rule for the purpose of changing and measuring the length of the part of the string between them.
• -monyDeadjectival suffix used to form an abstract noun usually from personal adjectives.
• mordicativeBiting or corrosive.
• mulctuaryImposing a pecuniary penalty; consisting of, or paid as, a fine.
• mussitationSpeech conducted in a hushed manner, akin to a murmur or a whisper.
• mutuationAn act of borrowing or exchanging.
• narratrixA female narrator.
• nascencyA state of incipiency; a quality of nascence.
• natatoryof, or relating to, swimming
• naumachiaThe recreation of a sea battle staged for entertainment.
• navigatrixA female navigator.
• NecessitasThe personification of absolute necessity; Ananke.
• nectareousPertaining to nectar; nectarous.
• negotiatrixA female negotiator.
• negotiosityThe ability to negotiate many things at once.
• NethaniahA male given name from Hebrew of biblical origin.
• nocenceGuilt; transgression.
• nocencyGuilt; transgression.
• nomen agentisagent noun
• nomen instrumentiA noun denoting an instrument or tool.
• non constatIt is not certain; It is doubted.
• non sequiturAny abrupt and inexplicable transition or occurrence.
• nutrixA nurse, primarily a wet nurse or similar hired child carer.
• nymphaeumA shrine consecrated to water nymphs, often with a fountain.
• objectrixA woman who objects; a female objector; compare objectress.
• objectumAttracted to inanimate objects, especially sexually or romantically, but can be other types such as platonic or familial.
• oblocutorA gainsayer; a critic.
• octonariusA verse having eight metrical feet.
• -oidResembling; having the likeness of (usually including the concept of not being the same despite the likeness, but counterexamples exist).
• omasumThe third compartment of the stomach of a ruminant; the lining of said compartment, regarded as a foodstuff.
• omnisciousOmniscient; all-knowing.
• operatrixA female operator.
• orchiopexyA procedure for fixation of a testis, often to move an undescended testicle into the scrotum and keep it there.
• OrdovicesAn ancient tribe of Britannia, situated opposite the island of Anglesey.
• ore rotundoSpoken in an eloquent, clear, and confident manner.
• organum triplumA type of organum with three voices, pioneered by medieval composer Pérotin.
• orichalcumA valuable yellow metal known to the Ancient Greeks and Romans; now sometimes interpreted as referring to a natural alloy of gold and copper, and sometimes treated as a mythical substance.
• -oriumForming nouns denoting a place for a particular function or thing.
• ornatrixA tirewoman, an adorner.
• orphanotrophiumA kind of orphanage in ancient times.
• ostentatrixAn ostentatious woman
• pacificateSynonym of pacify.
• PanathenaeaA festival formerly held annually in Athens to honour the city's patron goddess Athena, involving animal sacrifices, a grand procession, and, every fourth year, athletic and musical contests.
• Paschal TriduumA period of three days that begins with the liturgy on the evening of Maundy Thursday.
• pastrixSynonym of pastoress.
• PaulianSynonym of Pauline (“of or relating to Paul the Apostle or his writings”).
• PaulianistSynonym of Paulian (“a follower of Paul of Samosata”).
• Pax RomanaThe long period of relative peace and minimal expansion by military force experienced by the Roman Empire between 27 BC and 180 AD.
• pedaleA foot-cloth in front of an altar.
• PentelicOf or relating to Mount Pentelicus (Penteliko Mountain), near Athens, famous for its fine white marble quarries.
• percontationan enquiry
• perfectusSynonym of perfect (“leader of the Cathar movement”).
• PergameneOf, from or relating to Pergamum.
• periculumaccident or casus, as distinguished from dolus and culpa, and hence relieving one from the duty of performing an obligation
• perlativeDescribes a case, in very few inflected languages, that expresses movement through or along a referent noun, as "along" in "they travelled along the river".
• perpetratrixfemale perpetrator
• persecutrixA female persecutor.
• phagedenicRelating to phagedena.
• -phileForming nouns and adjectives meaning "loving", "friendly", or "friend".
• philosophasterA pretender to philosophy; a petty or charlatan philosopher.
• phthiriasisAn infestation by pubic lice (Pthirus pubis).
• picturaThe picture or image component of something, such as an emblem or poem, that contains a combination of imagery and text or symbols.
• plebiscitumA law enacted by the plebs, under the superintendence of a tribune or some subordinate plebeian magistrate, without the senate's intervention.
• plumbumSynonym of lead, chiefly in scientific contexts.
• plumbum argentariumSynonym of argentarium.
• plumoseHaving feathers or plumes.
• -polisForms names of cities or kinds of cities.
• PolyclitusA male given name of historical usage, notably borne by Polyclitus the Elder, 5th century BCE Ancient Greek sculptor and artist from Argos or Sicyon
• PolyhymniaThe Muse of sacred music.
• popinaAn Ancient Roman bar or bistro, selling wine and simple foods.
• postscriptumA thing that has been written afterwards; something appended in writing.
• practicantA practitioner.
• precationA prayer or act of praying; an earnest request.
• precentrixA female precentor.
• premeditateTo meditate, consider, or plan beforehand; to think about and revolve in the mind beforehand.
• presciousForeknowing; prescient.
• principateThe early period of the Roman Empire, during which some characteristics of the government of the Roman Republic were retained; the reign of any particular emperor during said period.
• principialElementary; fundamental.
• pro-agreeing with; supporting; favouring
• procrastinatrixA female who procrastinates.
• procreatrixA female procreator.
• progenitrixA female progenitor, a foremother, any of a person's direct female ancestors (ancestresses).
• prolongateSynonym of prolong.
• promotrixA female promoter.
• propagatrixA female propagator
• prosectorA person who prepares a body for dissection by students, or dissects them as demonstrations.
• prosecutrixA female prosecutor
• psalteriumAn omasum.
• psoraA cutaneous disease, especially psoriasis, scabies, or mange.
• pulvinusA joint on a plant leaf or petiole that may swell and cause movement of the leaf or leaflet.
• pungeTo pierce, prick, puncture.
• PyriphlegethonSynonym of Phlegethon.
• quadragenariousSynonym of quadragenarian: Of or related to fortysomethings.
• quaternariusA verse having four metrical feet.
• quattuorvirA member of a quattuorvirate; one of four people associated in some office.
• quattuorviralOf or belonging to the quattuorviri or the quattuorvirate.
• quattuorvirateA group of four people, especially a council of four men sharing office or rule.