HL meaning in Regional ?

Answer:

What is Holland mean?

Holland is a geographical region and former province on the western coast of the Netherlands. The name Holland is also frequently used informally to refer to the whole of the country of the Netherlands. This usage is commonly accepted in other countries and is also commonly employed by the Dutch themselves. However, some in the Netherlands, particularly those from regions outside Holland, find it undesirable or misrepresentative to use the term for the whole country.

From the 10th to the 16th century, Holland proper was a unified political region within the Holy Roman Empire as a county ruled by the counts of Holland. By the 17th century, the province of Holland had risen to become a maritime and economic power, dominating the other provinces of the newly independent Dutch Republic.

The area of the former County of Holland roughly coincides with the two current Dutch provinces of North Holland and South Holland into which it was divided, and which together include the Netherlands' three largest cities: the capital city of Amsterdam; Rotterdam, home of Europe's largest port; and the seat of government of The Hague. Holland has a population of 6,583,534 as of November 2019, and a density of 1,203/km2 (3,120/sq mi).

reference

Full Form	Category
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Happiness Level	Academic & Science
Hamilton Library	Academic & Science
Host Language	Academic & Science
Hectoliter	Academic & Science
Hall of Languages	Academic & Science
Hard Limiting	Business
Hecla Mining Company	Business
Home Loan	Business
Hall and Lieberman economic theory	Business
Heavy Lift	Business
Heilmann and Lieb (non-crossing Rule)	Chemistry
Half Life	Chemistry
Heavy Liquid	Chemistry
Hypothetical Learning	Community
Higher Level	Community
Horse Life	Community
Hashed List	Computing
Hora Lagna	General
Hot Launch	General
High Loft	General
High Lord	General
Membership Hot Line	General
Hup Leck	General
Hes Lying	General
High Luster	General
Habs Lampoon	General
HogwartsLive	General
High Load	General
High Launch	General
Hypotenuse Leg	General
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Harry Larry	General
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Heart Lung	General
Hitachi Lg	General
High Lumen	General
High Lanuch	General
Hard Labour	General
Hot Load	General
Hac Lege	General
Hazardous Location	General
Harlan Leonard	General
Hidden Layer	General
Henry Louis	General
Hiram Lewis	General
High Low	General
Horizontal Landing	Governmental
the House of Lords	Governmental
House of Lords	Governmental
HochLicht	International
HektoLitre	International
Hopeful Lurker	Internet
Haliaetus Leucocephalus	Medical
Hearing Loss	Medical
Heart and Lungs	Medical
Hair Loss	Medical
Hepatic Lipase	Medical
Hepatic Lipidosis	Medical
Hearing Level	Medical
Hyperpigmented Lesions	Medical
Head Lice	Medical
Health Level	Medical
Humerus Length	Medical
hyperlipidemia	Medical
Hapag-lloyd	Messaging
Heat Loss	Physics Related
Holland	Regional
Heart Land	Regional
High Level	Space Science
Hinge Line	Space Science
Hydrogen Line	Space Science
Hardline	Space Science
Heel Line	Space Science
Hockey League	Sports
Head Linesman	Sports