involucre
n.
5Fr < L involucrum, wrapper, case, envelope < involvere: see INVOLVE6
1 Anat. a membranous covering or envelope
2 Bot. a ring of small leaves, or bracts, at the base of a flower, flower cluster, or fruit: involucres are found in all plants of the composite family Also in#vo[lu4crum 73kr!m8, pl. 3cra 73kr!8
in#vo[lu4cral 73kr!l8
adj.

Nothing to do with "filthy lucre", of which I wish I had more. Such as portraits of dead Presidents.

lucre
n.
5ME < L lucrum, gain, riches < IE base *lau3, to capture > Sans l+otram, booty, OE lean, OHG lon, reward6 riches; money: now chiefly in a humorously derogatory sense, as in filthy lucre (cf. 1 Tim. 3:3)

Heard ;mostly as root of "lucrative" = financially rewarding

In badly comminuted (many splinters) fractures, some of the fragments not
in contact with the bone may enlarge somewhat and become troublesome.
The radiologist may report the presence of an involucrum.

As result of aging, many endocrine glands undergo involution, losing the ability to produce
hormones. I had a total body scan, for no better reason than to have my medical insurance
help pay for an underutilized MRI machine. The report told me my sella turcica, where my
pituitary used to be is just a little puddle of stagnant water. And my gonads are almost gone.
That's involution.
involution
n.
5L involutio < involutus, pp. of involvere6
1 an involving or being involved; entanglement
2 anything that is involved; complication; intricacy
3 Anat. the process of rolling or curling inward, as in the formation of a gastrula
4 Biol. a retrograde or degenerative change
5 Gram. an involved construction, esp. one created by a clause interposed between a subject and its predicate
6 Math. the raising of a quantity to any given power
7 Med. a) the return of an organ to its normal size after distention, as of the womb after childbirth b) a decline in the normal functions of the human body, or of an organ, that occurs with age, as the changes taking place at menopause
in#vo[lu4tion[al
adj.
in#vo[lu4tion[ar#y
adj.

iodopsin
n.
5< IOD(O)3 + Gr opsis, sight (< ops, EYE) + 3IN16 a photosensitive, violet-colored pigment-protein found in the cones of the retinas of animals that have color vision

The ipilipil is one of those rainforest plants which would be an excellent candidate to supply
biomass to be converted to fuel. To generate the equivalent of one million barrels of oil would
only require (at the maximum) a 12,000 hectare plantation, which is an area roughly only twice
the size of Manhattan. In addition to providing the biomass to be converted into fuel, the ipilipil
would provide an enormous amount of forage for livestock, a great amount of fertilizer, as well as a commercial thickener.

source: The Collins English Dictionary © 1998
HarperCollins Publishers
iridaceous [rdes, a-]
adj. of, relating to, or belonging to the
Iridaceae, a family of monocotyledonous
plants, including iris, crocus, and
gladiolus, having swordlike leaves and
showy flowers.

A val;uable tropical wood.