Where does “microtúbulo” come from?

microtúbulo (Spanish) comes from Spanish micro-, from Ancient Greek μικρο-, from Ancient Greek μικρός, from Proto-Indo-European mēy- — soft, tender, dear.

microtúbulo (Spanish): microtubule

Definitions

microtubule

Ancestry of “microtúbulo”, step by step

Step	Language	Word	Meaning
1	Spanish	micro-	micro
2	Ancient Greek	μικρο-	micro
3	Ancient Greek	μικρός	little, small
4	Proto-Indo-European	mēy-	soft, tender, dear

Every word from Proto-Indo-European mēy- →Every word from Ancient Greek μικρός →Every word from Spanish micro- →