Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of ir- is as below...

Pulmonata :: Pulmonata (n. pl.) An extensive division, or sub-class, of hermaphrodite gastropods, in which the mantle cavity is modified into an air-breathing organ, as in Helix, or land snails, Limax, or garden slugs, and many pond snails, as Limnaea and Planorbis..

Insect :: Insect (n.) Any air-breathing arthropod, as a spider or scorpion..

Air-drawn :: Air-drawn (a.) Drawn in air; imaginary.

Corundum :: Corundum (n.) The earth alumina, as found native in a crystalline state, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond..

Malacopoda :: Malacopoda (n. pl.) A class of air-breathing Arthropoda; -- called also Protracheata, and Onychophora..

Desiccator :: Desiccator (n.) A short glass jar fitted with an air-tight cover, and containing some desiccating agent, as sulphuric acid or calcium chloride, above which is suspended the material to be dried, or preserved from moisture..

Air Bladder :: Air bladder () An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus..

Chiaro-oscuro :: Chiaro-oscuro (n.) The art or practice of so arranging the light and dark parts as to produce a harmonious effect. Cf. Clair-obscur.

Hair :: Hair (n.) A spring device used in a hair-trigger firearm.

Capellmeister :: Capellmeister (n.) The musical director in royal or ducal chapel; a choir-master.

Opisthopulmonate :: Opisthopulmonate (a.) Having the pulmonary sac situated posteriorly; -- said of certain air-breathing Mollusca.

Fair-weather :: Fair-weather (a.) Made or done in pleasant weather, or in circumstances involving but little exposure or sacrifice; as, a fair-weather voyage..

Faair-spoken :: Faair-spoken (a.) Using fair speech, or uttered with fairness; bland; civil; courteous; plausible..

Clair-obscur :: Clair-obscur (n.) See Chiaroscuro.

In- :: In- () An inseparable prefix, or particle, meaning not, non-, un- as, inactive, incapable, inapt. In- regularly becomes il- before l, ir- before r, and im- before a labial..

Reptilia :: Reptilia (n. pl.) A class of air-breathing oviparous vertebrates, usually covered with scales or bony plates. The heart generally has two auricles and one ventricle. The development of the young is the same as that of birds..

Fair-natured :: Fair-natured (a.) Well-disposed.

Hair-salt :: Hair-salt (n.) A variety of native Epsom salt occurring in silky fibers.

Fair-weather :: Fair-weather (a.) Appearing only when times or circumstances are prosperous; as, a fair-weather friend..

Air-tight :: Air-tight (n.) A stove the draft of which can be almost entirely shut off.

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