Webster's Dictionary 1913

9370

Psychometry

Psy‐chom″e‐try (?), n. [Psycho- + -metry.] (Physiol.) The art of measuring the duration of mental processes, or of determining the time relations of mental phenomena. — Psy′cho‐...

9371

Psychopannychism

Psy″cho‐pan″ny‐chism (?), n. [Psycho- + Gr. � to spend all night long; πα̑σ, πα̑ν, all + � night.] (Theol.) The doctrine that the soul falls asleep at death, and does not wake u...

9372

Psychopathy

Psy‐chop″a‐thy (?), n. [Psycho- + Gr. �, �.] (Med.) Mental disease. See Psychosis, 2. — Psy′cho‐path″ic, a. — Psy‐chop″a‐thist, n.

9373

Psychophysical

Psy′cho‐phys″ic‐al (?), a. Of or pertaining to psychophysics; involving the action or mutual relations of the psychical and physical in man.Psychophysical time(Physiol.), the ti...

9374

Psychophysics

Psy′cho‐phys″ics (?), n. [Psycho- + physics.] The science of the connection between nerve action and consciousness; the science which treats of the relations of the psychical an...

9375

Psychopomp

Psy″cho‐pomp (?), n. [Gr. �; ψυχή the soul + � to send: cf. F. psychopompe.] (Myth.) A leader or guide of souls. J. Fiske.

9376

Psychosis

Psy‐cho″sis (?), n. [NL. See Psycho-.]1. Any vital action or activity. Mivart.2. (Med.) A disease of the mind; especially, a functional mental disorder, that is, one unattended ...

9377

Psychotherapeutics

Psy′cho‐ther′a‐peu″tics (?), n. [Psycho- + therapeutics.] (Med.) The treatment of disease by acting on the mind, as by suggestion; mind cure; psychotherapy.

9378

Psychotherapy

Psy′cho‐ther″a‐py (?), n. [Psycho- + therapy.] (Med.) Psychotherapeutics.

9379

Psychozoic

Psy′cho‐zo″ic (?), a. [Psycho- + Gr. � life.] (Geol.) Designating, or applied to the Era of man; as, the psychozoic era.

9380

Psychrometer

Psy‐chrom″e‐ter (?), n. [Gr. ψυχρόσ cold + -meter: cf. F. psychromètre.] An instrument for measuring the tension of the aqueous vapor in the atmosphere, being essentially a wet ...

9381

Psychrometrical

Psy′chro‐met″ric‐al (?), a. Of or pertaining to the psychrometer or psychrometry.

9382

Psychrometry

Psy‐chrom″e‐try (?), n. Hygrometry.

9383

Psylla

‖Psyl″la (?), n.; pl.Psyllæ (#). (Zoöl.) Any leaping plant louse of the genus Psylla, or family Psyllidæ.

9384

Ptarmigan

Ptar″mi‐gan (?), n. [Gael. tarmachan; cf. Ir. tarmochan, tarmonach.] (Zoöl.) Any grouse of the genus Lagopus, of which numerous species are known. The feet are completely feathe...

9385

Ptenoglossa

‖Pte′no‐glos″sa (?), n. pl.(Zoöl.) A division of gastropod mollusks having the teeth of the radula arranged in long transverse rows, somewhat like the barbs of a feather.

9386

Ptenoglossate

Pte′no‐glos″sate (?), a.(Zoöl.) Of or pertaining to the Ptenoglossa.

9387

Pteranodon

Pte‐ran″o‐don (?), n.(Paleon.) A genus of American Cretaceous pterodactyls destitute of teeth. Several species are known, some of which had an expanse of wings of twenty feet or...

9388

Pteranodontia

‖Pte‐ran′o‐don″ti‐a (?), n. pl.(Paleon.) A group of pterodactyls destitute of teeth, as in the genus Pteranodon.

9389

Pterichthys

‖Pte‐rich″thys (?), n.(Paleon.) A genus of Devonian fossil fishes with winglike appendages. The head and most of the body were covered with large bony plates. See Placodermi.

9390

Pteridologist

Pter′i‐dol″o‐gist (?), n. One who is versed in pteridology.

9391

Pteridology

Pter′i‐dol″o‐gy (?), n. [Gr. �, �, a fern + -logy.] That department of botany which treats of ferns.

9392

Pteridomania

Pter′i‐do‐ma″ni‐a (?), n. [Gr. �, �, a fern + E. mania.] A madness, craze, or strong fancy, for ferns. C. Kingsley.

9393

Pteridophyta

‖Pter′i‐doph″y‐ta (?), n. pl.(Bot.) A class of flowerless plants, embracing ferns, horsetails, club mosses, quillworts, and other like plants. See the Note under Cryptogamia. — ...

9394

Pterobranchia

‖Pter′o‐bran″chi‐a (?), n. pl.(Zoöl.) An order of marine Bryozoa, having a bilobed lophophore and an axial cord. The genus Rhabdopleura is the type. Called also Podostomata. See...

9395

Pteroceras

‖Pte‐roc″e‐ras (?), n.(Zoöl.) A genus of large marine gastropods having the outer border of the lip divided into lobes; — called also scorpion shell.

9396

Pterocletes

‖Pter′o‐cle″tes (?), n. pl. [NL., fr Pterocles, the typical genus, fr. Gr. � feather + �, �, a key, tongue of a clasp.] (Zoöl.) A division of birds including the sand grouse. Th...