Where does “taskusanakirja” come from?

taskusanakirja (Finnish) comes from Finnish tasku, from Old Swedish taska, from Proto-Germanic taskǭ, from Proto-Indo-European das-, from Translingual da, from English deca-, from French déca-, from Latin decās — front.

taskusanakirja (Finnish): pocket dictionary

Definitions

pocket dictionary

Ancestry of “taskusanakirja”, step by step

taskusanakirja traces back through two separate lines of ancestry.

via Finnish tasku

Step	Language	Word	Meaning
1	Finnish	tasku	pocket
2	Old Swedish	taska	—
3	Proto-Germanic	taskǭ	bag, purse; pouch, pocket
4	Proto-Indo-European	das-	—
5	Translingual	da	—
6	English	deca-	Greek number...
7	French	déca-	deca-
8	Latin	decās	a decade (period of ten years)
9	Ancient Greek	δεκάς	the number ten; a group of ten, decade
10	Ancient Greek	-ᾰ́ς	group of
11	Proto-Indo-European	-ónts	Derives nouns denoting body parts
12	Hungarian	önt	to pour; to cast; accusative singular of ön
13	Hungarian	ön	you
14	Hungarian	ön-	self-
15	Turkish	ön	front

via Finnish sanakirja

Step	Language	Word	Meaning
1	Finnish	sanakirja	dictionary
2	Swedish	ordbok	a dictionary
3	Swedish	ord	word; A distinct unit of language with a...
4	Old Swedish	orþ	word
5	Old Norse	orð	word
6	Proto-Germanic	wurdą	word
7	Proto-Indo-European	werdʰo-	word
8	Proto-Indo-European	werh₁-	to speak, say

Every word from Turkish ön →Every word from Ancient Greek -ᾰ́ς →Every word from English deca- →