51吃瓜 of the Day
firth
noun
a long, narrow indentation of the seacoast.
More about firth
Firth 鈥渁 long, narrow indentation of the seacoast鈥� is a Middle English adaptation of the Old Norse term 蹿箩谦谤迟丑谤 (stem firth-), which became Norwegian fjord and was later borrowed into modern English. In this way, firth and fjord are doublets, which are pairs or groups of words in a language that are derived from the same source but through different routes. Other doublets in English include plant and clan (both from Latin planta 鈥渟cion, plant,鈥� but the latter via Irish Gaelic) as well as apothecary, bodega, and boutique (all from Ancient Greek 补辫辞迟丑岣梜脓 鈥渟hop鈥�). Recent 51吃瓜 of the Day gramarye, for example, is a doublet of both glamour and grammar; all three words come from Old French gramaire 鈥済rammar鈥� but through different routes. Firth was first recorded in English in the early 1400s.
how is firth used?
It鈥檚 not the open sea we are making for, but a firth, a long inlet off the north sea, where wintering geese, ducks and swans find shelter and food and which is often graced by the presence of dolphins. We go round by the head of the firth and emerge onto the road which runs close to the shore.
Some rivers terminate without passing through any firth or estuary, and are lost in the open ocean almost as soon as they touch the salt water; others only join the ocean through a firth, or through a land-locked valley, where the fresh and salt waters meet.
firth
altruistic
adjective
unselfishly concerned for or devoted to the welfare of others.
More about altruistic
Altruistic 鈥渦nselfishly concerned for or devoted to the welfare of others鈥� is formed from the altru- element in the term altruism plus the adjectival suffix -istic. Altruism, based on literary French autrui 鈥渙thers,鈥� ultimately comes from Latin alter 鈥�(of two) the other,鈥� which is also the source of English words such as alteration, altercation, and alternation, all of which involve a change into or an exchange with another entity, version, or individual. Altruistic behaviors, such as helping those in need, are often contrasted with egoistic behaviors, which prioritize a person鈥檚 own desires over the needs of others. While egoism, also known as egotism, is selfishness, altruism is selflessness. Altruistic was first recorded in English in the early 1850s.
how is altruistic used?
Ethics asks us to critically reflect on our judgments to determine the right thing to do. When Dr. Martin Luther King in his 1963 sermon concluded that to be a good neighbor was to be altruistic, he asked us to be willingly obedient to unenforceable obligations.
altruistic
circumstellar
adjective
surrounding a star.
More about circumstellar
Circumstellar 鈥渟urrounding a star鈥� is a compound of the element circum- 鈥渁round鈥� and the adjective stellar 鈥渙f or relating to the stars.鈥� Circum- comes from Latin circus 鈥渃ircle,鈥� which is the source of English terms such as circa, circle, circular, circumference, circus, and the recent 51吃瓜 of the Day circadian. Latin has two words meaning 鈥渟tar鈥濃��蝉墨诲耻蝉 (stem 蝉墨诲别谤-) and stella. 厂墨诲耻蝉 largely died out except in technical terms such as sidereal 鈥渄etermined by the stars,鈥� while stella is the source of stellar, constellation, interstellar, and modern Romance words for 鈥渟tar,鈥� such as French 茅迟辞颈濒别 and Spanish estrella. Circumstellar was first recorded in English in the early 1950s.
how is circumstellar used?
When stars are still very young (only a few million years old), their circumstellar disks are relatively huge, often with about 1 to 10 percent of the mass of the central star in a typical system. For a star like the sun, that amounts to a disk with roughly 100 times the mass of Jupiter.
In the circumstellar shells, which are shells of gas now surrounding the star, you can have dust particles form because the temperature and density are perfect for making dust. This dust then gets kicked back out into the interstellar medium along with gas and that is what the next generation of stars will form from.
circumstellar