- 1衰老、老化（學術／生物用語）
Senescence is the process of becoming old and beginning to show the wear of age. use it for living things: a cell that has stopped dividing, a leaf that is dying on the tree, a body whose systems are slowing. It is a cool, technical noun, the name of a process, not a rude word for a person. You will meet it in science, medicine, and careful writing about . Everyday English just says getting old or . Though actually, scientists sometimes separate ‘getting older in years’ from senescence, the decline that often comes with those years — the tidy school word covers both, and this one is narrower. It is not a word to aim at someone’s face.
組成From senescent + the noun ending -ence: the state or process of growing old.
原始詞典資料5 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
senescencenoun/sɪˈnɛ.səns/
- 1
biologynatural-sciencesThe state or process of ageing, especially in humans; old age.
- Organized shuffleboard has always filled me with dread. Everything about it suggests infirm senescence and death: it’s like it’s a game played on the skin of a void and the rasp of the sliding puck is the sound of that skin getting abraded away bit by bit.
- Over the next 150 years the known age of the Earth expanded a millionfold and lost worlds of the past were found to have overflowed with species now gone. The chain stretched, aged, and eventually succumbed to senescence.
- 2
biologycytologymedicineCeasing to divide by mitosis because of shortening of telomeres or excessive DNA damage.
- 2018, University of Edinburgh, "Liver Study Offers Insights into Hard-to-treat Diseases" (9 March 2018), Drug Discovery & Development. Tests in mice found that inducing senescence in bile duct cells - mimicking the process seen in human bile duct disease - led to liver scarring and damage of liver function.
- 3
gerontologymedicinesciencesOld age; accumulated damage to macromolecules, cells, tissues and organs with the passage of time.
- 4
biologybotanynatural-sciencesFruit senescence, leading to ripening of fruit.
- 5
biologycytologymedicineCondition when the cell ceases to divide.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。