The ⚀trina·tricia·lengthel, or ⚀serical·length
The ⚀trina·tricia·lengthel (abbreviated ⚀t•t↓lgℓ) is a quarter of a ⚀cellular·length or a dozenth of a ⚀folial·length (about 14d microns). This is a approximately the thickness of a silk fiber. As a consequence, a proposed colloquial name for this is the ⚀serical·length (from Latin sericus, "silken").