Glossary / X
Psychology terms starting with X
39 terms with short definitions. Study these as flashcards
- X̄ (X bar)other
- The symbol X̄ represents a sample’s average, calculated by adding its scores and dividing by their number.
- X chromosomenoun
- One sex chromosome; females usually have two, while males usually have one plus a Y.
- x primenoun
- In this statistical usage, the symbol x′ indicates a predicted or expected value for the variable x.
- x-axisnoun
- The horizontal line on a graph, usually showing the variable being compared or grouped.
- x-coordinatenoun
- The first number in a standard two-dimensional coordinate pair locates a point horizontally relative to the graph’s origin.
- x-interceptnoun
- The horizontal coordinate where a graphed line meets the x-axis gives the x value when y is zero.
- X-linkedadjective
- Describes a trait or disorder caused by a gene on the X chromosome.
- X-raynoun
- A form of high-energy radiation passes through many materials and can create pictures of structures inside the body.
- x′other
- The symbol x′ represents a calculated prediction or expectation for the variable x.
- Xanaxnoun
- A brand of alprazolam, this benzodiazepine medicine is used to treat anxiety and panic disorders.
- xanthinenoun
- A chemical formed as the body breaks down DNA and RNA components is later converted into uric acid.
- xantho- (xanth-)prefix
- This word part adds the meaning yellow to a scientific or medical word.
- xanthocyanopsianoun
- A color vision difference limits perceived colors to yellow and blue shades, without distinct red or green experiences.
- xanthomatosisnoun
- A group of conditions involves fatty material collecting in tissues, often forming yellowish deposits in the skin.
- xanthopsianoun
- A change in color perception makes viewed objects appear unusually yellow.
- xanthopsinnoun
- A historical name describes yellow all-trans-retinal formed when light breaks down the visual pigment rhodopsin.
- Xenazinenoun
- A brand of tetrabenazine, this medicine reduces certain involuntary movements by lowering supplies of some brain chemical messengers.
- xeno- (xen-)prefix
- This word part contributes meanings such as foreign, unfamiliar, or different.
- xenobioticnoun
- A chemical found within an organism comes from outside rather than being naturally made by that organism.
- xenoglossophilianoun
- A person tends to choose unusual or foreign words, sometimes to sound impressive.
- xenoglossynoun
- In parapsychology, a claimed ability allows someone to speak or write a language they supposedly never learned.
- xenophobianoun
- Fear or hostility targets people viewed as foreign, unfamiliar, or outside one’s group.
- xenorexianoun
- A clinically concerning eating behavior involves swallowing objects or materials that are not food.
- xeroderma pigmentosumnoun
- An inherited condition impairs repair of ultraviolet DNA damage, causing extreme sunlight sensitivity and sometimes progressive nervous system problems.
- xerophthalmianoun
- Excessive eye dryness involves changes to the eye’s surface and can occur with vitamin A deficiency.
- XXother
- This chromosome pattern contains two X chromosomes and is commonly associated with female sex development.
- XXX syndromenoun
- A chromosome variation involves an extra X chromosome in typically female individuals, with effects ranging from unnoticed to developmental difficulties.
- XXXX syndromenoun
- A rare chromosome condition involving four X chromosomes can affect physical development and learning, with widely varying support needs.
- XXXXX syndromenoun
- A rare chromosome condition involving five X chromosomes is associated with intellectual disability and differences in physical development.
- XXXXY syndromenoun
- A rare chromosome condition involving four X chromosomes and one Y commonly affects learning, speech, muscle tone, and physical development.
- XXXY syndromenoun
- A rare chromosome condition involving three X chromosomes and one Y can affect sexual development, language, and learning.
- XXY syndromenoun
- An extra X chromosome alongside an X and Y can affect testicular development, fertility, and some learning skills.
- XXYY syndromenoun
- A chromosome condition involving two X and two Y chromosomes can affect fertility, physical development, learning, and movement skills.
- XYabbreviation
- Two sex chromosomes, X and Y, usually linked with male biological development in humans.
- xylenenoun
- An easily evaporated solvent can cause intoxication and damage the nervous system or other organs when inhaled.
- Xyremnoun
- A brand of sodium oxybate, this nervous system depressant treats certain symptoms of narcolepsy.
- XYY syndromenoun
- An extra Y chromosome produces an XYY pattern in typically male individuals, sometimes accompanied by language or learning difficulties.
- XYZ groupingnoun
- Schools place students from one grade into three achievement groups using tests and records, while keeping a shared basic curriculum.
- XYZ systemnoun
- A mathematical color system describes colors using three numerical components called X, Y, and Z.
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