This word is from the Spanish language.
semana
week
Mostly seen in the phrase Semana Santa, which means Holy Week or the week before Easter Sunday.
The more common Tagalog word for ‘week’ is linggo.
The word semanang is a ligated form found in other Philippine languages like Visayan.
The native Tagalog term for “Holy Week” is Mahal na Araw, particularly referring to Biyernes Santos (Good Friday), and even to Thursday and the other earlier days of that week.