Part 137

<hw>Ac`ti*nol"o*gy</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[Gr. <?/, <?/, ray + <ets>-logy</ets>.]</ety> <def>The science which treats of rays of light, especially of the actinic or chemical rays.</def>

<h1>Actinomere</h1> <Xpage=18>

<hw>Ac*tin"o*mere</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[Gr. <?/, <?/, ray + <?/ part.]</ety> <fld>(Zo\'94l.)</fld> <def>One of the radial segments composing the body of one of the C\'d2lenterata.</def>

<h1>Actinometer</h1> <Xpage=18>

<hw>Ac`ti*nom"e*ter</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[Gr. <?/, <?/, ray + <ets>-meter</ets>]</ety> <sd>(a)</sd> <def>An instrument for measuring the direct heating power of the sun's rays.</def> <sd>(b)</sd> <def>An instrument for measuring the actinic effect of rays of light.</def>

<h1>Actinometric</h1> <Xpage=18>

<hw>Ac`ti*no*met"ric</hw> <tt>(#)</tt>, <tt>a.</tt> <def>Pertaining to the measurement of the intensity of the solar rays, either <it>(a)</it> heating, or <it>(b)</it> actinic.</def>

<h1>Actinometry</h1> <Xpage=18>

<hw>Ac`ti*nom"e*try</hw> <tt>(#)</tt>, <tt>n.</tt> <p><b>1.</b> <def>The measurement of the force of solar radiation.</def>

<i>Maury.</i>

<p><b>2.</b> <def>The measurement of the chemical or actinic energy of light.</def>

<i>Abney.</i>

<h1>Actinophorous</h1> <Xpage=18>

<hw>Ac`ti*noph"o*rous</hw> <tt>(#)</tt>, <tt>a.</tt> <ety>[Gr. <?/, <?/, ray + <?/ to bear.]</ety> <def>Having straight projecting spines.</def>

<h1>Actinosome</h1> <Xpage=18>

<hw>Ac*tin"o*some</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[Gr. <?/ ray + <?/ body.]</ety> <fld>(Zo\'94l.)</fld> <def>The entire body of a c\'d2lenterate.</def>

<h1>Actinost</h1> <Xpage=18>

<hw>Ac"tin*ost</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[Gr. <?/, <?/, ray + <?/ bone.]</ety> <def>(Anat.) One of the bones at the base of a paired fin of a fish.</def>

<h1>Actinostome</h1> <Xpage=18>

<hw>Ac*tin"o*stome</hw> <tt>(#)</tt>, <tt>n.</tt> <ety>[Gr. <?/, <?/, a ray + <?/ mouth.]</ety> <fld>(Zo\'94l.)</fld> <def>The mouth or anterior opening of a c\'d2lenterate animal.</def>

<h1>Actinotrocha</h1> <Xpage=18>

<hw>Ac`ti*not"ro*cha</hw> <tt>(#)</tt>, <tt>n. pl.</tt> <ety>[NL.; Gr. <?/, <?/, a ray + <?/ a ring.]</ety> <fld>(Zo\'94l.)</fld> <def>A peculiar larval form of <i>Phoronis</i>, a genus of marine worms, having a circle of ciliated tentacles.</def>

<h1>Actinozoa</h1> <Xpage=18>

<hw>Ac"ti*no*zo"a</hw> <tt>(#)</tt>, <tt>n. pl.</tt> <ety>[Gr. <?/, <?/, ray + <?/ animal.]</ety> <fld>(Zo\'94l.)</fld> <def>A group of C\'d2lenterata, comprising the Anthozoa Ctenophora. The sea anemone, or actinia, is a familiar example.</def>

<h1>Actinozoal</h1> <Xpage=18>

<hw>Ac`ti*no*zo"al</hw> <tt>(#)</tt>, <tt>a.</tt> <fld>(Zo\'94l.)</fld> <def>Of or pertaining to the Actinozoa.</def>

<h1>Actinozo\'94n</h1> <Xpage=18>

<hw>Ac"ti*no*zo"\'94n</hw> <tt>(#)</tt>, <tt>n.</tt> <fld>(Zo\'94l.)</fld> <def>One of the Actinozoa.</def>