Sadayatana

Translations of ṣaḍāyatana
English	six sense bases, six sense spheres
Pali	saḷāyatana
Sanskrit	ṣaḍāyatana
Chinese	六入, 六処 (liùrù)
Japanese	六入, 六処 (rōmaji: rokunyū, rokusho)
Korean	육입, 육처 (RR: yuk-yip, yuk-tcher)
Tibetan	skye.mched
Vietnamese	六入, 六処 (lục căn)
Glossary of Buddhism

Ṣaḍāyatana (Sanskrit) or saḷāyatana (Pāli) means the six sense bases (Pāli, Skt.: āyatana), that is, the sense organs and their objects. These are:

That is, in Buddhism, the sixth "internal" and "external" sense bases are: mind (Skt., manas; Pali, mano); and, thought (along with memory and emotion) (Skt., dharma; Pali, dhamma).

Ṣaḍāyatana is the fifth link in the Twelve Nidānas of Pratitya-Samutpada (Dependent Origination) and thus likewise in the fifth position on the Bhavacakra (Wheel of Becoming). Ṣaḍāyatana (Sense Gates) is dependent on Nāmarūpa (Name and Form) as condition before it can exist.

Ṣaḍāyatana is also the prevailing condition for the next condition in the chain, Contact (Sparśa).

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Wikipedia