lud-, ludi-, lus-

(Latin: play, make sport of, jest; sportive; pastime)

illusive (adjective), more illusive, most illusive
A reference to that which tends to deceive by unreal appearances; productive of false impressions: The travel brochure spoke of the illusive beauty of a dying industrial town.

Sometimes, finding it easy to understand definitions in dictionaries can be an illusive experience because too many of them use another form of the same word that is being defined.

illusory (adjective), more illusory, most illusory
Produced by, based on, or having the nature of a mistaken perception of reality: Tom's florid and illusory language made his audience believe that beauty existed even in the town dump.

A world without color appears to be missing crucial elements

Colors not only enable us to see the world more precisely, they also create emergent qualities that would not exist without them.

Many people believe that color is a defining and essential property of objects, one depending entirely on the specific wavelengths of light reflected from them.

  • Color is a sensation created in the brain.
  • If the colors we perceived depended only on the wavelength of reflected light, an object's color would appear to change dramatically with variations in illumination throughout the day and in shadows.
  • Instead, patterns of activity in the brain render an object's color relatively stable despite changes in its environment.
  • The pathway in the brain that serves navigation and movement is essentially color-blind.
  • People who become color-blind after a stroke appear to have normal visual perception otherwise.
  • The study of illusory colors (colors that the brain is tricked into seeing) demonstrates that color processing in the brain occurs hand in hand with processing of other properties; such as, shape and boundary.
  • Visual perception begins with the absorption of light; or, more precisely, the absorption of discrete packets of energy called photons; by the cones and rods located in the retinas of the eyes.
  • A cone photoreceptor responds according to the number of photons it captures, and its response is transmitted to two different types of neurons, termed on and off bipolar cells.
  • These neurons in turn provide input to on and off ganglion cells that sit side by side in the retina.
  • About 40 percent or more of the human brain is thought to be involved in vision.
  • Visual signals disperse to more than 30 different areas, interconnected by more than 300 circuits.
  • The complexity of color illusion suggests that it is unlikely to result from a single unitary process, but may represent an attempt by the brain to reconcile competing signals from multiple specialized pathways.
  • The study of illusory colors demonstrates that the perception of color in the brain generates emergent properties of form and depth.
  • Ongoing research about illusory colors will continue to offer a tantalizing portal into the complexities of the human visual system.
—Excerpts from "Illusory Color & the Brain",
by John S. Werner, Baingio Pinna, and Lothar Spillmann;
Scientific American, March, 2007; pages 70-75.
Causing a deception or misleading others.
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interlude (s) (noun), interludes (pl)
1. A period of time between events or activities: Hayden resumed his acting career after a short interlude.
2. An interval in the performance of a play; the pause between the acts, or the means (dramatic or musical) employed to fill this pause: During the first interlude at the theater production, Terry started to talk with his friends.

The brief interlude during the long play featured comical characters juggling balls.

3. Etymology: from Middle Latin interludium, "an interlude"; from Latin inter-, "between" + ludus, "a play". Originally, farcical episodes introduced between acts of mystery plays.
Noise is a real problem.
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ludi publici (pl) (noun)
In Roman antiquity, ludi publici (LYOO digh PUB li sigh) were public games and spectacles, including athletic competitions, horse and chariot races, exhibitions of the arena, and theater.

"Ludi Cercenses" (sur SEN seez) were games of the Circus; "ludic scenici" (SEN i sigh) of the theater.

Some were named for particular festivals: "ludi Apollinares" (uh pol" i NAY reez), in honor of Apollo, chiefly theatrical; "ludi Romani" (roh MAY nigh), in honor of Jupiter, in September; and "ludi Megalenses" (meg" uh LEN seez), in honor of the Magna Mater, April 4 to April 10.

ludible (adjective), more ludible, most ludible
Playful: Sara enjoyed her ludible puppy Luna and often played with her in the yard.
ludibrious (adjective), more ludibrious, most ludibrious
Making fun of: On the school playground, the bully was heard by Mrs. Dawson making ludicrous comments and so he was taken to the principal's office.
ludibundness (s) (noun) (no plural)
Good fun; gaiety: The ludibundness of the kitten had no limits and she often kept Carol awake at night by playing on the bed.
ludic (adjective), more ludic, most ludic
1. In psychiatry; unreal, play like, pseudo, or false: Excess physical energy is usually expended without any purpose in some way, most usually in play activity, called ludic activity.

After a hard day at the office, Michelle tried to think of the most ludic occupation she could to unwind and help her start to relax.

2. Of or pertaining to undirected and spontaneously frolicsome behavior: The young children on the playground often started to play imaginative and ludic games.
ludicropathetic (adjective), more ludicropathetic, most ludicropathetic
Conveying behavior that is absurd and nonsensical; including, a feeling of sadness and compassion: Peter was feeling very tired and he was experiencing ludicropathetic laughter that was inappropriate and uncontrollable.
ludicrous (adjective), more ludicrous, most ludicrous
1. So obviously absurd or incongruous as to be laughable: Ludicrous can describe either something funny that provokes giggling, or something ridiculous and hilarious, not worthy of serious consideration.
2. Causing derisive or amusingly absurd or utterly ridiculous behavior which is unsuitable for a situation: When she was nervous or under stress, Lucinda often told the most ludicrous jokes.
3. Etymology: Ludicrous was borrowed from Latin ludicrus, from ludicrum, "joke, amusement", and from ludere, "to play".
Ridiculous and laughable.
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Absurd and foolish.
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ludicrously (adverb), more ludicrously, most ludicrously
Ridiculously silly or amusingly funny causing jovial shouts: The goats which were gamboling or running around and playing excitedly in the pasture was the most ludicrously funny scene Charles had ever seen.
ludicrousness (s) (noun) (no plural)
1. A reference to being broadly or extravagantly humorous; resembling a farce or joke: Sharon's ludicrousness was obvious when people saw her green and red hair.
2. Completely devoid or lacking wisdom or good sense: When the company went bankrupt, the CEO was accused of ludicrousness.
ludification (s) (noun), ludifications (pl)
A deception or mocking: The term ludification means the use of words or actions that are intended to evoke contemptuous snickering at or feelings toward a person or thing; that is, it is making fun of something or someone by ridiculing or making him or her appear to be silly.
ludo, Ludo (s) (noun) (no plural)
A game played with dice and counters on a special board: In order to relax after their exams, the students played ludo.
ludologist (s) (noun), ludologists (pl)
1. Someone who academically studies video and, especially, computer games: James, who is a ludologist studies the influences that computer games have on a growing number of people from the perspectives of psychology, anthropology, economy, sociology, etc.
2. Etymology: from ludus, the Latin word for "game", to refer to "the study of games and play activities".

Related "jest; joke; wit; humor; funny" word units: faceti-; farc-; humor-; jocu-; satir-.