Pronunciation: [sˈɛktə] (IPA) 
The word "sector" is spelled as /ˈsɛktər/. The first letter, "s", represents the /s/ sound. The following "e" is pronounced as a schwa /ə/. The combination of "ct" creates a /kt/ sound. The letter "o" is pronounced as /ɛ/ in this case, and the final "r" is sounded as a silent consonant. "Sector" refers to a part or division of a larger unit, such as a sector of a company or a sector of society.
A sector refers to a distinct portion or division of an overall entity or system, typically characterized by specific characteristics, functions, or boundaries. It often represents a subdivision or fragment within a larger whole, whether that is an economy, industry, market, or geographical area. Sectors commonly exist in various domains such as business, finance, economics, and geography.
In the field of economics, a sector refers to a specific segment of an economy that is distinguishable based on the type of economic activity or industry it encompasses. These sectors can include primary sectors that involve the extraction of natural resources; secondary sectors that encompass manufacturing and construction; and tertiary sectors that primarily comprise services such as retail, banking, healthcare, and tourism.
Furthermore, sectors can also describe delineated areas within a market, often demarcated according to different products, customer preferences, or business models. For instance, the technology sector pertains to companies that develop, produce, and sell technology-related products and services. Similarly, the finance sector consists of institutions involved in financial intermediation like banks, investment firms, and insurance companies.
Geographically, sectors may refer to distinct regions or parts of a city, country, or territory that have specialized characteristics or functions. These can include industrial sectors like manufacturing zones or residential sectors that are predominantly residential areas.
Ultimately, a sector represents a specific and identifiable division within a larger entity, whether that entity is an economy, industry, market, or geographic region.
That which cuts or divides; a mathematical instr. to assist in laying down plans, for measuring zenith distances, &c.; sector of a circle, a part of a circle bounded by two radii and the arc between their extremities; dip-sector, an instr. used for measuring the dip of the horizon.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
The word "sector" comes from the Latin word "sector", which means "cutter" or "one who cuts". It is derived from the verb "secare", meaning "to cut", referring to the action of dividing or cutting something. This Latin term also gave rise to the related word "secator", which in turn led to the Old French word "sectueur" and the Middle French word "seceur", ultimately evolving into the modern English word "sector". The term later took on broader meanings, such as "part", "division", or "portion", which are commonly associated with the concept of sectors today.
