Definition of marchioness in English:
 marchioness
noun ˈmɑːʃ(ə)nəsˌmɑːʃəˈnɛsˈmɑrʃ(ə)nəs
1The wife or widow of a marquess.
 Example sentencesExamples
-  You did see the marchioness spill her drink on the countess.
 -  The marchioness will be fine after a few days' rest.
 -  A month later the new marquis was without a marchioness; his wife Carolyn filed for divorce.
 -  It was a year ago this very day that the marchioness miscarried the babe.
 -  They watched as the marquess and his new marchioness performed the extraordinary feat of holding their breath for some time.
 -  It was not often that a marchioness of France underwent the extraordinary question.
 -  When he learned of her deed, Audubon wrote to his wife that the marchioness had pasted the birds ‘on the walls of one of her Superb Rooms.’
 -  His travelling companions included Ian Fleming's widow, Anne, and the marchioness of Dufferin.
 -  Will you tell anyone who asks that I felt ill and the marchioness accompanied me home?
 -  But to his critics his fondness for the marchioness of Londonderry looked like social climbing and a desire for acceptance by the establishment.
 -  Now let's see if they are ready for the new marchioness.
 -  Thanks to the major and minor arcana of good behaviour set out in the book, I am at no loss as to the correct order of precedence as to whether a marchioness or a viscount should be led into dinner first.
 -  The Science Show had two dedicated court reporters on call around the clock, 52 weeks a year (or 24/7 as it's now known), helicopters on standby and research teams analysing every royal nuance down to the lowliest marchioness.
 
- 1.1 A woman holding the rank of marquess in her own right.
 
Origin
  
Late 16th century: from medieval Latin marchionissa, feminine of marchio(n-) 'ruler of a border territory', from marcha 'march' (see march2).
   Definition of marchioness in US English:
 marchioness
nounˈmärSH(ə)nəsˈmɑrʃ(ə)nəs
1The wife or widow of a marquess.
 Example sentencesExamples
-  When he learned of her deed, Audubon wrote to his wife that the marchioness had pasted the birds ‘on the walls of one of her Superb Rooms.’
 -  It was a year ago this very day that the marchioness miscarried the babe.
 -  Thanks to the major and minor arcana of good behaviour set out in the book, I am at no loss as to the correct order of precedence as to whether a marchioness or a viscount should be led into dinner first.
 -  His travelling companions included Ian Fleming's widow, Anne, and the marchioness of Dufferin.
 -  Now let's see if they are ready for the new marchioness.
 -  The marchioness will be fine after a few days' rest.
 -  The Science Show had two dedicated court reporters on call around the clock, 52 weeks a year (or 24/7 as it's now known), helicopters on standby and research teams analysing every royal nuance down to the lowliest marchioness.
 -  A month later the new marquis was without a marchioness; his wife Carolyn filed for divorce.
 -  Will you tell anyone who asks that I felt ill and the marchioness accompanied me home?
 -  It was not often that a marchioness of France underwent the extraordinary question.
 -  They watched as the marquess and his new marchioness performed the extraordinary feat of holding their breath for some time.
 -  You did see the marchioness spill her drink on the countess.
 -  But to his critics his fondness for the marchioness of Londonderry looked like social climbing and a desire for acceptance by the establishment.
 
- 1.1 A woman holding the rank of marquess in her own right.
 
Origin
  
Late 16th century: from medieval Latin marchionissa, feminine of marchio(n-) ‘ruler of a border territory’, from marcha ‘march’ (see march).