in English is:

stratigraphy

Mutations

Soft:(no mutation)
Nasal:(no mutation)
Aspirate:(no mutation)

Use

y stratigraffeg hon
fy stratigraffeg i
dy stratigraffeg di
ei stratigraffeg ef/o
ei stratigraffeg hi
ein stratigraffeg ni
eich stratigraffeg chi
eu stratigraffeg nhw/hwy
External

Dictionary Portal

This is a library of dictionaries and other online resources where you can search further for stratigraffeg*:

Specialist Dictionaries
Glossaries
Terminology
Encyclopedia
Example Sentences
Sentences containing:

*External websites will be opened in a new window.