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(lə-no͞o′jə-nəs, -nyo͞o′-) also


Covered with soft, short hair; downy.


Covered with lanugo.


(lă-nū′gō) [L. lana, wool]
1. Downy hair covering the body.
2. Fine downy hairs that cover the body of the fetus, esp. when premature. The presence and amount of lanugo aids in estimating the gestational age of preterm infants. The fetus first exhibits lanugo between weeks 13 and 16. By gestational week 20, it covers the face and body. The amount of lanugo is greatest between weeks 28 and 30. As the third trimester progresses, lanugo disappears from the face, trunk, and extremities.
lanuginous, adjective
References in periodicals archive ?
Roots fasciculate, fleshy, cylindrical-fusiform, lanuginose, brownish-white, 25-60 mm long, 4-8 mm in diameter.
Leaves elliptic to oblanceolate, 2.2- 6.4 cm long, 0.7-2.4 cm wide, spirally alternate, crowded at the apex of the branches, discolorous, margin entire, revolute, apex slightly acute to obtuse, base long-attenuate in a pseudopetiole up to 2.5 cm long; leaf blade coriaceous, greenish brown, olive or light brown, 3-veined from near base, adaxially glabrous or sparsely floccose in the proximal third and prominently reticulate-veined, densely yellow, ochre or yellowish-ochre lanuginose, apparently 3-veined abaxially; young leaves adaxially with dense to sparser deciduous whitish hirsute trichomes, abaxially densely orange to yellow lanuginose.