<B>opinionated, </B>adjective.<DL COMPACT><DD> obstinate or conceited with regard to one's opinions; dogmatic. <BR> <I>Ex. The general is too opinionated to listen to anyone else.</I> adv. <B>opinionatedly.</B> noun <B>opinionatedness.</B> </DL>
<A NAME="opinionation">
<B>opinionation, </B>noun.<DL COMPACT><DD> obstinacy or conceit in one's opinions; dogmatism. </DL>
<A NAME="opinionative">
<B>opinionative, </B>adjective.<DL COMPACT><DD><B> 1. </B><B>=opinionated.</B> <DD><B> 2. </B>having to do with opinion or belief; doctrinal. adv. <B>opinionatively.</B> noun <B>opinionativeness.</B> </DL>
<A NAME="opinionator">
<B>opinionator, </B>noun.<DL COMPACT><DD> an opinionated person. </DL>
<A NAME="opinioned">
<B>opinioned, </B>adjective.<DL COMPACT><DD><B> 1. </B>having an opinion. <BR> <I>Ex. to be otherwise opinioned.</I> <DD><B> 2. </B><B>=opinionated.</B> </DL>
<A NAME="opinionpoll">
<B>opinion poll,</B><DL COMPACT><DD> a survey of public opinion on a particular subject, conducted by asking a selected number of people questions designed to elicit their opinion. Their answers, usually listed in percentages, are taken to represent the opinions of a much larger group or of the general public. </DL>
<A NAME="opioid">
<B>opioid, </B>noun.<DL COMPACT><DD> any synthetic drug that resembles an opiate in its effects. <BR> <I>Ex. It [methadone] is a narcotic--an "opiodi"--for in action it is fundamentally similar to morphine or heroin, and it is fully as addictive (Horace Freeland Judson).</I> </DL>
<A NAME="opiology">
<B>opiology, </B>noun.<DL COMPACT><DD> the study of the nature and properties of opium. </DL>
<A NAME="opiophagy">
<B>opiophagy, </B>noun.<DL COMPACT><DD> the eating of opium. </DL>
<A NAME="opisometer">
<B>opisometer, </B>noun.<DL COMPACT><DD> an instrument for measuring curved lines, as on a map. </DL>
<A NAME="opisthobranch">
<B>opisthobranch, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> any one of a group of marine gastropod mollusks having the gills behind the heart. <DD><I>adj. </I> of or belonging to this group. </DL>
<B>opium, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> <B>1. </B>a powerful drug that causes sleep and eases pain. Opium is a narcotic made from the milky juice of the opium poppy and is a bitter substance, containing morphine and other alkaloids. Opium is valuable in medicine, but is dangerously habit-forming. <DD><B> 2. </B>(Figurative.) anything having the properties or effects of opium. <BR> <I>Ex. There is no antidote against the opium of Time (Sir Thomas Browne).</I> <DD><I>adj. </I> of or having to do with opium. <BR> <I>Ex. an opium dream, the opium traffic.</I> </DL>
<A NAME="opiumeater">
<B>opium eater,</B><DL COMPACT><DD> a person addicted to opium eating. </DL>
<A NAME="opiumeating">
<B>opium eating,</B><DL COMPACT><DD> the habitual eating or swallowing of opium in some form, as a narcotic. </DL>
<A NAME="opiumpoppy">
<B>opium poppy,</B><DL COMPACT><DD> a usually white poppy of Asia and Europe from which opium is derived. Its tiny seeds and oil are used as food. </DL>
<B>oplatek, </B>noun, pl. <B>-platki.</B><DL COMPACT><DD> a thin wafer baked in a mold with figures of the Nativity, traditionally blessed by the priest in Polish churches and distributed during the Christmas season. </DL>
<A NAME="opopanax">
<B>opopanax, </B>noun.<DL COMPACT><DD><B> 1. </B>a gum resin formerly used in medicine, obtained from the root of a southern European plant of the parsley family. <DD><B> 2. </B>the plant itself. <DD><B> 3. </B>a gum resin like myrrh, used in perfumery, obtained from an African tree. </DL>
<A NAME="opossum">
<B>opossum, </B>noun.<DL COMPACT><DD> a small animal that carries its young in a pouch or on its back. The opossum is a mammal, feeds at night, and lives mostly in trees. There are several kinds, making up a family of animals. One kind, when caught or frightened, pretends to be dead. The opossum is common in the United States, Canada, and South America. Also, <B>possum.</B> </DL>
<A NAME="opossumshrew">
<B>opossum shrew,</B> <B>=solenodon.</B></DL>
<A NAME="opossumshrimp">
<B>opossum shrimp,</B><DL COMPACT><DD> any one of a family of small crustaceans resembling shrimps, the females of which carry their eggs in a pouch on the underside of the body. </DL>
<A NAME="opotherapy">
<B>opotherapy, </B>noun.<DL COMPACT><DD> the treatment of disease with extracts made from animal organs; organotherapy. </DL>
<B>oppidan, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> of or having to do with a town; urban. <DD><I>noun </I> <B>1. </B>an inhabitant of a town; townsman. <DD><B> 2. </B>(British.) a student boarding in the town, such as at Eton College. </DL>
<A NAME="oppidum">
<B>oppidum, </B>noun, pl. <B>-da.</B><DL COMPACT><DD> an ancient Roman provincial town. </DL>
<A NAME="oppilate">
<B>oppilate, </B>transitive verb, <B>-lated,</B> <B>-lating.</B><DL COMPACT><DD> to fill with obstructing matter; stop up; obstruct. noun <B>oppilation.</B> </DL>
<B>opponent, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> a person who is on the other side in a fight, game, or discussion; person fighting, struggling, or speaking against another. <BR> <I>Ex. He defeated his opponent in the election.</I> <DD><I>adj. </I> <B>1. </B>being opposite; opposing. <DD><B> 2. </B>of or having to do with opposable muscles, such as those of the hand by which the fingers and thumb may be placed against each other, so as to pick up or hold something. </DL>
<A NAME="opportune">
<B>opportune, </B>adjective.<DL COMPACT><DD> fortunate or well-chosen; suitable; favorable. <BR> <I>Ex. You have come at a most opportune moment, for I need your advice. An opportune remark kept me from a disastrous investment.</I> adv. <B>opportunely.</B> noun <B>opportuneness.</B> </DL>
<A NAME="opportunism">
<B>opportunism, </B>noun.<DL COMPACT><DD> the policy or practice of using every opportunity to one's advantage without considering whether such an action is right or wrong in each particular circumstance. <BR> <I>Ex. [His] principles may keep him from this path to oblivion even if opportunism does not (New Yorker).</I> (SYN) expediency. </DL>
<A NAME="opportunist">
<B>opportunist, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> a person who uses every opportunity to his advantage, regardless of right or wrong. <BR> <I>Ex. He was surrounded by adventurers, slick opportunists, intriguers (Atlantic).</I> <DD><I>adj. </I> <B>=opportunistic.</B> </DL>
<A NAME="opportunistic">
<B>opportunistic, </B>adjective.<DL COMPACT><DD> of or having to do with opportunism; characteristic of opportunists. adv. <B>opportunistically.</B> </DL>
<A NAME="opportunisticinfection">
<B>opportunistic infection,</B><DL COMPACT><DD> an infection which develops in people with a deficiency of the immune system, especially with such conditions as AIDS or SCID. </DL>
<A NAME="opportunity">
<B>opportunity, </B>noun, pl. <B>-ties.</B><DL COMPACT><DD><B> 1. </B>a good chance; favorable time; convenient occasion. <BR> <I>Ex. I had an opportunity to earn some money picking blueberries. I have had no opportunity to give him your message, because I have not seen him.</I> <DD><B> 2. </B>a chance or prospect for advancing in position or attaining a goal. <BR> <I>Ex. good job opportunities.</I> </DL>
<A NAME="opposability">
<B>opposability, </B>noun.<DL COMPACT><DD> the state or property of being opposable. <BR> <I>Ex. the opposability of the jaws.</I> </DL>
<A NAME="opposable">
<B>opposable, </B>adjective.<DL COMPACT><DD><B> 1. </B>that can be opposed. <DD><B> 2. </B>that can be placed opposite something else. The human thumb is opposable to the fingers. </DL>
<A NAME="oppose">
<B>oppose, </B>verb, <B>-posed,</B> <B>-posing.</B><DL COMPACT><DD><I>v.t. </I> <B>1. </B>to be against; be in the way of; act, fight, or struggle against; try to hinder; resist. <BR> <I>Ex. Many people opposed building a new highway because of the cost. A swamp opposed the advance of the army.</I> <DD><B> 2. </B>to set up against; place in the way of. <BR> <I>Ex. Let us oppose good nature to anger, and smiles to cross words.</I> <DD><B> 3. </B>to put in contrast. <BR> <I>Ex. Night is opposed to day. Love is opposed to hate.</I> <DD><B> 4. </B>to put in front of; cause to face. <BR> <I>Ex. to oppose one's finger to one's thumb.</I> <DD><I>v.i. </I> to be or act in opposition; create resistance. <BR> <I>Ex. to take arms against a sea of troubles And, by opposing, end them (Shakespeare).</I> noun <B>opposer.</B> adv. <B>opposingly.</B> </DL>
<A NAME="opposeless">
<B>opposeless, </B>adjective.<DL COMPACT><DD> not to be opposed; not resisting. <BR> <I>Ex. your great opposeless wills (Shakespeare).</I> </DL>
