nour

The root nour goes back to the Latin verb nūtrīre, "to feed, to nourish, to bring up." At its heart is one simple, tender act: giving food to a living thing so it can grow. A mother nūtrīre her baby; a farmer nūtrīre his crops; the earth nūtrīre a seed. From that single image of feeding-to-grow, English grew three differently-spelled branches — and the spelling is the only thing that hides their common parent.

Branch 1 — nutr- (the scientific, bookish line). This branch came straight from classical Latin and kept the cleanest t. It gives us the vocabulary of food science: a nutrient is a substance that feeds the body; nutrition is the whole process of feeding and being fed; something nutritious is full of that feeding power; a nutritionist studies it. Add the prefix mal- (bad) and you get malnutrition — bad feeding, not enough good food.

Branch 2 — nour- (the French, everyday line). As Latin softened into Old French, nūtrīre became norir/nourir, and Middle English borrowed it as nourish. Here the meaning is warmer and broader than science: to nourish is to feed and sustain growth, and by extension to encourage anything to flourish — you can nourish a child, a friendship, or a hope. From it come nourishment (the food itself, or the act), nourishing (life-giving), and the mal- / under- / well- forms: malnourished, undernourished, well-nourished — all describing how well a body has been fed.

Branch 3 — nurs- (the most disguised line). This is the surprise. Old French norrice ("a wet-nurse," literally "a woman who feeds/nourishes") gave English nurse. A nurse was originally not a hospital worker but a feeder — a woman hired to breastfeed and raise a child. From "one who feeds and tends," the word broadened to "one who cares for the sick." A nursery is the feeding-and-tending place — a room for babies, and, by a lovely extension, a place where young plants are fed and raised. Nursing is the act, and a nursing-home is where the frail are fed and cared for. The hidden logic: every nurse, nursery, and nursing word is about feeding and tending something young or weak until it can stand on its own.

The pattern across all three: ask "what is being fed, and how technical is the word?" Lab and diet talk → nutr- (nutrient, nutrition). Warm, general sustaining → nour- (nourish). Feeding-and-caring for the helpless → nurs- (nurse, nursery). Same Latin heartbeat, three coats of spelling.