psych/o

psychometrics [psycho, mentalprocess + metr, to measure + ics, science] The science of measuring mental capabilities, functions, processes, traits, etc. (seye'kuh MET riks)

psychometry [psycho, mentalprocess + -metry, to measure] The alleged divination of knowledge concerning an object or a person associated with it through proximity to or physical contact with the object. (seye KOM ih tree)

psychomotor [psycho, mind & motor] Pertaining to mental processes affecting muscular activity. (seye'koh MOHT ur)

psychoneurosis [psycho, mind + neur, nerve + -osis, abnormal condition] Any of various mental or emotional disorders, including anxiety, phobias, and obsessions, that usually do not include an impaired perception of reality. Same as neurosis. (seye'koh noo ROH sis)

psychopath [psycho, mind + path, disease] A person with a severe personality disorder marked by immoral and antisocial behavior. See sociopath. (SEYE kuh path')

psychopathology [psycho, mind +path, disease+ -ology, study of] The branch of medical science dealing with the study of disorders and diseases of the mind. (seye'koh puh THOL uh jee)

psychopathy [psycho, mind + -pathy, disease] Any disease or disorder of the mind. (seye KOP uh thee)

psychopharmacology [psycho, mind +pharmac, drug + ology, study of] The branch of medical science dealing with the study of the relationships between drugs and mental and emotional behavior. (seye'koh fahr'muh KOL uh jee)

psychophysics [psycho, mental process+ physi, physical+ ics, study of] The branch of psychology dealing with the study of the effects of physical stimuli on mental processes. (seyel koh FIZ iks)

psychophysiology [psycho, mind + physi, physical + -ology, study of] The branch of medical science dealing with the study of the interrelations between mental and physical processes. (seye'koh fiz'ee OL uh jee)

psychosexual [psycho, mind & sexual] Pertaining to or involving the mental and emotional aspects of sexuality. (seye'koh SEK shoo ul)

psychosis [psych, mind + -osis, abnormal condition] A severe mental disorder marked by delusions, regressive behavior, impaired thinking, etc., and usually including an impaired perception of reality . See neurosis. (seye KOH sis)

psychosocial [psycho, mind & social] Pertaining to both psychological and social aspects of behavior. (seye'koh SOH shul)

psychosomatic [psycho, mind + somat, body + -ic] Pertaining to diseases, disorders, or conditions of the body created or influenced by the mind. (seye'koh suh MAT ik)

psychosurgery [psycho, mind & surgery] Surgery of the brain to treat severe mental disorders. (seye'koh SUR jer ee)

psychotherapy [psycho, mind & therapy] The use of psychological techniques for treating mental, behavioral, and emotional disorders. (seye'koh THEHR uh pee)

psychotropic [psycho, mind + trop, changing + -ic] Capable of affecting the mind, as certain drugs used to treat mental disorders. (seye'koh TROP ik)

pter/o, pteryg, pteryx wing, fin

acanthopterygian [acantho, spine + pterygfin + -ian] Any of numerous teleost fishes with spiny fins, as perch or bass. See teleost. (ak' un thop' tuh RIJ ee un)

apteral [a-, without + pter, wing + -al] Pertaining to a structure with columns on each end, but none along the sides. See peripteral. (AP ter ul)

apterous [a-, without + pter, wing + -ous] Without wings or winglike appendages. (AP ter us)

apteryx [a-, without + pteryx, wing] A New Zealand bird with undeveloped wings and no tail. Kiwi. (AP ter iks')

archaeopteryx [archaeo,first + pteryx, wing] An extinct reptilelike bird, often called the first bird, that had feathers and well-developed wings. (ahr'kee OP ter iks)

brachypterous [brachy, short +pter, wing+ -ous] Having underdeveloped or very short wings, as certain insects. (bra KIP ter us)

chiropter [chiro, hand + pter, wing] An order of placental mammals, including bats and flying foxes, with the forelimbs modified for flight. (keye ROP ter)

Coleoptera [coleo, sheath + pter, wing + -a] Any of a large order of insects with an outer pair of wings that when at rest encase and protect an inner pair of wings, as the weevils and beetles. (koh' lee OP ter uh)

dipterous [di-, two + pter, wing + -ous] Any of a large order of insects with two wings or winglike appendages. (DIP ter us)

eurypterid [eury, wide +pter, wing + -id] Any of various extinct aquatic arthropods with wide winglike appendages. (yoo RIP ter id')

hemipterous [hemi-, half+ pter, wing + -ous] Any of a large number of insects belonging to the order Hemiptera that are commonly referred to as the true bugs. The order Hemiptera is composed of the suborders Homoptera and Heteroptera. See homopterous and heteropterous. (hih MIP ter us)

heteropterous [herero, different +pter, wing+ -ous] Pertaining to any of numerous insects belonging to the suborder Heteroptera, characterized by forewings that differ in thickness from the membranous hindwings. See homopterous and hemipterous. (het'uh ROP ter us)

homopterous [homo, same +pter, wing+ -ous] Pertaining to any of numerous insects belonging to the suborder Homoptera, characterized by membranous forewings that do not differ in thickness from the membranous hindwings. See heteropterous and hemipterous. (hoh MOP ter us)

hymenopterous [hymeno, membrane + pter, wing + -ous] Pertaining to any of a large order of insects, including ants, bees, wasps, and termites, that have two pairs of membranous wings coupled together to provide more stable flight. (heye' muh NOP ter us)

lepidopteran [lepido, scale + pter, wing + -an] Any of a large order of insects, including butterflies, moths, and skippers, the adults of which have two pairs of membranous wings covered with often brightly colored scales. (lep' ih DOP ter un)