Lesson 48

(geology) a distinct layer of rock or sediment

a problem or question that is confusing and needs a lot of skill or effort to solve or answer

The meaning of life has always been a conundrum that philosophers have pondered for centuries.

a section of additional material that is usually added at the end of a book

The book included an addendum with updated statistics on the topic.

a single-celled microorganism that typically reproduces by cell division and can be found in various environments, including soil, water, and living organisms

Escherichia coli (E. coli) is a common bacterium found in the intestines of humans and animals.

a large retail store selling various goods, or a particular type of goods

informal terms for money

a device with a long thin bar and a weight at the end that swings side to side to keep a clock working

the architectural wall or frame that separates the stage from the auditorium in a modern theater, often forming an arch through which the audience views the performance

The ornate proscenium framed the grand opera stage.

a tarred fiber used for caulking seams in wooden ships and as insulation in plumbing

The shipwright carefully packed oakum into the seams of the wooden hull to make the vessel watertight.

a single piece of information or a reference point used in analysis or measurement

In statistical analysis, each individual response serves as a datum for further examination.

a concise collection or summary of information, typically presented in a single volume or document

The encyclopedia serves as a compendium of knowledge on various subjects, offering comprehensive information in one place.

severe criticism or public condemnation, often directed at someone's actions or behavior that is considered shameful or disgraceful

The politician faced widespread opprobrium after being caught in a corruption scandal, tarnishing his reputation irreparably.

a point or support on which a lever pivots or rotates in order to lift or move objects

The plank acted as a fulcrum for the seesaw, allowing the children to take turns going up and down.

(anatomy) the bone structure that surrounds and protects the brain

The cranium protects the delicate structures of the brain.

an unpleasant or noxious odor, typically emanating from decaying matter or industrial processes

The effluvium from the nearby landfill permeated the air, causing discomfort among residents in the area.

a period of one thousand years, usually calculated from the year of the birth of Jesus Christ

Historians study events that occurred during the first millennium AD to understand ancient civilizations.

an officially declared pause of a specific action or policy, often imposed by authorities to allow for review, safety, or negotiation

The government imposed a moratorium on offshore drilling after the oil spill.

a formal expression of praise or tribute, typically delivered in speech or writing

The professor delivered an encomium praising the student's groundbreaking research and its significant contributions to the field.

protection or a safe place for those who are in danger or are experiencing hardship

a questionable or unproven remedy or treatment, often sold with exaggerated claims of effectiveness

The traveling salesman touted his miracle nostrum as a cure for all ailments, promising instant relief to anyone who purchased it.