頤

• Anatomical: The jaw, chin, or cheeks.
• Functional: To feed; to provide material sustenance or support the physical needs of a dependent or household.
• Abstract/Ethical: To cultivate the mind, spirit, or character; to provide the ethical framework or guidance necessary for growth.

• Noun: The jaw; the chin.
• Transitive Verb: To feed or nourish (a person, quality, or system).
• Intransitive/Reflexive Verb: To maintain oneself; to cultivate one's own disposition.

In philosophical contexts, the term denotes a reciprocity between intake and provision: the discernment of what one consumes or learns versus the responsibility of what one provides or teaches.

• Semantic variant: U+9823
• Simplified variant: U+9890
• Associated with the Yi Jing hexagram ䷚ (Nourishment).

The term oscillates between literal and metaphorical senses. In contexts of education, self-care, or governance, determine whether "nourishment" refers to material means (food, wealth) or immaterial means (virtue, wisdom). Distinguish whether the text emphasizes the mechanism of intake or the quality of the sustenance provided.