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Poikilotherm. The common frog is a poikilotherm and is able to function over a wide range of body core temperatures. A poikilotherm (/ ˈpɔɪkələˌθɜːrm, pɔɪˈkɪləˌθɜːrm /) is an animal (Greek poikilos – 'various, spotted', and therme – 'heat) whose internal temperature varies considerably. Poikilotherms have to survive and ...
The pre-flight warm-up behavior of a moth. Insect thermoregulation is the process whereby insects maintain body temperatures within certain boundaries.Insects have traditionally been considered as poikilotherms (animals in which body temperature is variable and dependent on ambient temperature) as opposed to being homeothermic (animals that maintain a stable internal body temperature ...
Heterothermy or heterothermia (from Greek ἕτερος heteros "other" and θέρμη thermē "heat") is a physiological term for animals that vary between self-regulating their body temperature, and allowing the surrounding environment to affect it. In other words, they exhibit characteristics of both poikilothermy and homeothermy.
t. e. Palatalization (/ ˌpælətəlaɪˈzeɪʃən / PAL-ə-təl-eye-ZAY-shən) is a historical-linguistic sound change that results in a palatalized articulation of a consonant or, in certain cases, a front vowel. Palatalization involves change in the place or manner of articulation of consonants, or the fronting or raising of vowels.
A heteronym (also known as a heterophone) is a word that has a different pronunciation and meaning from another word but the same spelling. These are homographs that are not homophones. Thus, lead (/ˈlɛd/ the metal) and lead (/ˈliːd/ a leash) are heteronyms, but mean (/ˈmin/ average) and mean (/ˈmin/ intend) are not, since they are ...
The first phase of the Great Vowel Shift affected the Middle English close-mid vowels /eː oː/, as in beet and boot, and the close vowels /iː uː/, as in bite and out. The close-mid vowels /eː oː/ became close /iː uː/, and the close vowels /iː uː/ became diphthongs. The first phase was completed in 1500, meaning that by that time, words ...
Letter frequency is the number of times letters of the alphabet appear on average in written language. Letter frequency analysis dates back to the Arab mathematician Al-Kindi (c. 801 –873 AD), who formally developed the method to break ciphers. Letter frequency analysis gained importance in Europe with the development of movable type in 1450 ...
English phonology is the system of speech sounds used in spoken English. Like many other languages, English has wide variation in pronunciation, both historically and from dialect to dialect. In general, however, the regional dialects of English share a largely similar (but not identical) phonological system.