2. Noun. (geology) A tectonic plate that forms or moves under another ¹
3. Verb. (geology) To act as an underplate ¹
¹ Source: wiktionary.com
2. Noun. (geology) A tectonic plate that forms or moves under another ¹
3. Verb. (geology) To act as an underplate ¹
¹ Source: wiktionary.com