The meaning of SIR is a man entitled to be addressed as sir —used as a title before the given name of a knight or baronet and formerly sometimes before the given name of a priest.

Sir is a formal honorific address in English for men, derived from Sire in the High Middle Ages. Both are derived from the old French " Sieur " (Lord), brought to England by the French-speaking Normans, …

The Society of Interventional Radiology (SIR) is the premier professional organization representing interventional radiologists worldwide. With a legacy of excellence spanning decades, we are …

Definition of sir noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Sir is used at the beginning of a formal letter to a man you do not know: Dear Sir

People sometimes say sir as a very formal and polite way of addressing a man whose name they do not know or a man of superior rank. For example, a shop assistant might address a male customer as sir.

There are 19 meanings listed in OED's entry for the noun sir, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

SIR definition: a respectful or formal term of address used to a man. See examples of sir used in a sentence.

SIR meaning: 1 : used without a name as a form of polite address to a man you do not know; 2 : used without a name as a form of polite address to a man of rank or authority (such as a military or police …

5 days ago · sir (plural sirs) A man of a higher rank or position. A respectful term of address to a man of higher rank or position, particularly: quotations