ctenidium
(noun) comb-like respiratory structure serving as the gill of certain mollusks
Source: WordNet® 3.1
ctenidium (plural ctenidia)
(zoology) A respiratory system, in the form of a comb, in some molluscs
(zoology) A row of spines in some insects
Source: Wiktionary
10 June 2025
(noun) the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.); “communications is his major field of study”
The earliest credible evidence of coffee-drinking as the modern beverage appeared in modern-day Yemen. In the middle of the 15th century in Sufi shrines where coffee seeds were first roasted and brewed for drinking. The Yemenis procured the coffee beans from the Ethiopian Highlands.
