1. A substratum.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• substarte,
• substute,
• substraite,
• subtrat,
• substuite,
• substnace,
• substiante,
• substrait,
• substiute,
• substract,
• supstrate,
• substrated,
• subsrate,
• subtrate,
• substite,
• autostrata,
• subsrrate,
• substrats,
• sustrate,
• substrat

• substratum,
• substandard,
• substantive,
• substantiate,
• substantial,
• substation,
• substructure,
• substance,
• substitute,
• subset.

The adjective form of the word "substrate" is "substratal".

The plural of the "substrate" can be the "substrates".

The singular of the "substrate" can be the "substrate".