mindmap root((TROP)) tropism Automatic movement by an organism unable to move about from place to place, especially a plant, that involves turning or growing toward or away from a stimulus.
🌱The new president was soon showing a tropism for bold action, a tendency that seemed more the result of instinct than of careful thought. 🌳In hydrotropism, a plant's roots grow in the direction of increasing moisture, hoping to obtain water. In phototropism, a plant (or fungus) moves toward light, usually the sun—perhaps because, in the colder climates where such plants are usually found, concentrating the sun's warmth within the sun-seeking flower can create a warm and inviting environment for the insects that fertilize it. In thigmotropism, the organism moves in response to being touched; most climbing plants, for example, put out tiny tendrils that feel around for something solid and then attach themselves or curl around it. When microbiologists talk about tropism, however, they're often referring instead to the way a virus will seek out a particular type of cell to infect. And when intellectuals use the word, they usually mean a tendency shown by a person or group which they themselves might not even be aware of. entropy 1、 The decomposition of the matter and energy in the universe to an ultimate state of inactive uniformity.
2、 Chaos, randomness.
🌱The apartment had been reduced to an advanced state of entropy, as if a tiny tornado had torn through it, shattering its contents and mixing the pieces together in a crazy soup. 🌳With its Greek prefix en-, meaning "within," and the trop- root here meaning "change," entropy basically means "change within (a closed system)." The closed system we usually think of when speaking of entropy (especially if we're not physicists) is the entire universe. But entropy applies to closed systems of any size. Entropy is seen when the ice in a glass of water in a warm room melts—that is, as the temperature of everything in the room evens out. In a slightly different type of entropy, a drop of food coloring in that glass of water soon spreads out evenly. However, when a nonphysicist uses the word, he or she is usually trying to describe a large-scale collapse. heliotrope Any of a genus of herbs or shrubs having small white or purple flowers.
🌱A long bank of purple heliotrope lined the walkway, and her guests were always remarking on the flowers' glorious fragrance. 🌳Helios was the god of the sun in Greek mythology, and helio- came to appear in a number of sun-related English words. The genus known as the heliotropes consists of about 250 species; many are thought of as weeds, but the best-known species, garden heliotrope, is a popular and fragrant perennial that resembles the forget-me-not. The heliotrope tends to follow the sun—that is, turn its blossoms toward the sun as it travels from East to West every day. But the fact is, heliotropism—turning toward the sun—is common among flowers (and even leaves), and some, like the sunflower, are more dramatically heliotropic than the heliotrope. Those in the far North actually use their petals to reflect the sun's heat onto the flower's central ovary during the short growing season. psychotropic Acting on the mind.
🌱My mother is taking two drugs that may produce psychotropic side effects, and I'm worried that they might be interacting. 🌳Psychotropic is used almost always to describe substances that we consume. Such substances are more numerous than you might think, and some have been known for thousands of years. Native American religions, for example, have used psychotropic substances derived from certain cactuses and mushrooms for centuries. Caffeine and nicotine can be called psychotropic. Psychotropic prescription drugs include antidepressants (such as Prozac) and tranquilizers (such as Valium). Any medication that blocks pain, from aspirin to the anesthetics used during surgery, can be considered a psychotropic drug. Even children are now prescribed psychotropic drugs, often to treat attention deficit disorder. And all recreational drugs are psychotropic. Psychoactive is a common synonym of psychotropic.


    TROP comes from the Greek tropos, meaning "turn" or "change." The troposphere is the level of the atmosphere where most weather changes—or "turns in the weather"—occur. And the Tropics of Cancer and Capricorn are the lines of latitude where the sun is directly overhead when it reaches its northernmost and southernmost points, on about June 22 and December 22 every year—that is, the point where it seems to turn and go back the other way.🌸